Landmark 81 has a total of 81 floors, 461 m high. This is the tallest building in Vietnam, located in the center of Binh Thanh District, Ho Chi Minh City. The maintenance and technical maintenance of the entire building is performed daily by the management team and staff. Anh Vu – the technical manager of the Landmark 81 building, said that the technical team often had quick briefings early in the morning to determine the arising work to do during the day. At the same time, the technical status of the building, the work done in the previous day must be reported in detail. After that, the group of employees moved to the 79th floor of the building. This is the highest floor accessible by elevator. After that, people will walk up to the 80th and 81st floors (top floor) of the building to do their assigned work. Check the building’s power supply system. All electrical specifications must ensure safety conditions in accordance with regulations. Technical staff use specialized temperature gauges to check the heat at conductor structures and power-using equipment on the 80th floor. This is a routine job to promptly detect problems and limit problems. minimize the risk of accidental fire or explosion. A group of workers periodically maintain the glass. To do this, the worker must move on specialized rigs, in turn, check all the glass panes. The outer glass of the building is reinforced with special materials, ensuring safety and durability. Workers check a building’s cooling system. The staff checks the operating parameters of the elevator. “The building is tall, the elevator is an indispensable element in the operation. We understand this, so we should pay attention to the daily maintenance and technical maintenance, so that the elevator does not cause problems,” said Mr. Vu. to speak. The elevator of Landmark 81 building has a pulling force of 12,500 kg, each car has a load of 2,000 kg, a speed of 5m/s – is one of the fastest elevators in Vietnam. “Working on high-rise buildings requires us to have good health and overcome specific limitations. For example, when it comes to glass maintenance, every worker must overcome fear, focus on work and comply with all protection principles to ensure safety,” said Quang Trung, a technical staff member. Periodic inspection and technical maintenance is carried out in the early morning hours, or when people take a lunch break. Troubleshooting was also implemented urgently. This helps the building operate in a safe condition, and at the same time does not affect the activities of residents, merchants and visitors. In the photo is a visitor visiting the observatory on the 81st floor of the building on April 11. When put into operation in July 2018, the Landmark 81 building has become one of the symbols of Ho Chi Minh City. Inside the building, service-commercial activities take place quite bustling, contributing to the driving force to promote the development of the city in the direction of civilization and modernity.

In the program Hear me sing This week with the theme of Singer Giao Linh, the audience will meet again a female singer who has been an idol for generations, who has attached her name to a series of immortal songs over the years. Thanks to her sad voice and songs with difficult lyrics, she gave Giao Linh the title “Queen of melancholy”. Singer Giao Linh at the show. Her real name is Do Thi Sinh, born in 1949. According to the female singer who shared her not-so-famous time, she once confided to a friend that for example, if she went to sing later, what should be her stage name because of the name? It’s true that Sinh, putting together any word is difficult to hear and not beautiful. Besides, being a woman who sings, she needs a name that sounds sympathetic to all audiences. After thinking for a while, the singer’s friend thought of a friend with 2 children, one named Giao and the other named Linh. And the stage name Giao Linh was born from there. Singer Giao Linh recalled: “I’m so glad, the name is so good, just hearing it makes me feel so peaceful in my heart, like it’s absorbed into me.” More specifically, this name is not in contact with other artists. Singer Giao Linh in his youth. It turns out that her name Giao Linh is a combination of… your child’s name. Few people know, singer Giao Linh used to be an official employee of the national airline Vietnam Airlines in the position of ticket control. She said that at that time, only 16 years old, her biggest wish was to earn a lot of money to help her parents take care of their children’s education. Thanks to the introduction of musician Ngoc An – her first teacher, introduced to work for Vietnam Airlines, this airline needs more singers for the art department. Besides administrative work, Giao Linh also works as a singer of Vietnam Airlines. From checking airline tickets, she became the exclusive singer for this airline. From this milestone opened a glorious and brilliant life of “The Queen of Sorrows”, she was fortunate to meet musician Thu Ho and then signed with musician Nguyen Van Dong’s record label, officially entered the entertainment industry. To have a singer Giao Linh like today, besides luck, talent and effort are the things that contribute to maintaining the name of more than 55 years of singing of the famous singer Giao Linh – a monument of the lineage. bolero lyrical music. The world of musicians once wondered if Giao Linh would stop being sad when she sang happy music? To answer the above question, musician Nguyen Van Dong has just found a song “happy and fun” for the female celebrity to sing. And as a result, although the content, melody, and lyrics are all cheerful, through Giao Linh’s voice, it is all tinged with sadness. From that story, the title “Queen of Sorrows” has followed her until now. Singer Giao Linh is still agile, vivacious and passionate about art at the age of 72. In her private life, Giao Linh is married to her husband Vo Van Sang. At the age of 72, she still has a happy married life with her husband. Mr. Sang has passed the boat 3 times, with 6 stepchildren. Although the couple has no children together, the family is always cozy. The singer is also loved by her stepchildren. At this show about herself, singer Giao Linh also appeared as a theme judge next to the main judge – singer Thai Chau and guest judge – singer Van Khanh. Contestants Quan Pino, Tina Ngoc Nu and Doan Tuan carefully selected their favorite songs to recreate the glory of “The Melancholy Queen” such as: Mother’s heart, Two lost stars and Through the coma.

Flight equipment application PTC2 uses drones to manage and operate the transmission grid. Assigned by the National Power Transmission Corporation (EVNNPT) to pilot deploy many scientific and technological applications in the management and operation of the transmission grid, since 2017, PTC2 has researched and applied drones in the field of power transmission. management and operation of the transmission grid. The application helps to reduce the level of burden, improve safety and efficiency, and productivity for workers. Mr. Tran Thanh Phong, Director of PTC2 said that in 2019, after being accepted by EVNNPT, PTC2 has synchronously deployed to all affiliated units to deploy the application of flying equipment in the inspection of the power grid and supporting construction supervision and acceptance of power transmission works. From March 2020 up to now, PTC2 has deployed the application of aircraft to periodically check 1,100 km of 220 kV and 500 kV lines with a total flight time of 29,000 minutes. Thereby, it has contributed to reducing the burden, improving safety, efficiency and productivity for workers such as climbing high, contacting electrical equipment with large electromagnetic fields, moving on difficult terrains. difficult access to dangerous plants and animals. Rapid inspection deployment, being able to access locations in areas divided by rainstorms, landslides, real-time recording of the current situation with good quality images, clear viewing angles to help analyze information more accurate assessment and, most importantly, does not require power line interruption. Mr. Tran Thanh Phong analyzed, when applying flying equipment, according to preliminary calculations, on average, to test 1 km of 500 kV transmission line, it takes 0.52 time to perform the traditional method, and 0. 25 workers, down 0.27 jobs (52.38%). In addition, it also saves a lot of time, costs, and other human resources such as: checking thematically on corridors, conductors, lightning conductors, techniques, insulation status, accessories… Along with that, the application of flying equipment to support construction supervision of power transmission works, inspection, supervision and acceptance of pole erection, inspection of conductors, accessories, route corridors, etc. 220 kV, 500 kV works. Not only that, the application of flying equipment helps closely monitor the technical status of the power grid from above and in places where the human eye cannot see (or is very difficult to see). From there, it contributes to reducing the level of burden, improving safety, efficiency and productivity for workers such as climbing high, contacting electrical equipment with large electromagnetic fields, moving on difficult terrains. , access to dangerous plants and animals. Check for dangerous landslide areas or break off during flooding. Efficiency from surveillance camera system thống Camera system to monitor power transmission lines. An effective application for EVNNPT and PTC2 is the installation of line surveillance camera systems. Realizing the high efficiency and applicability of line cameras, PTC2 has installed cameras at all affiliated Power Transmissions since 2020. Up to now, on the PTC2 grid, 31 CCTV cameras have been installed on the transmission lines of the company. The cameras are connected to the company’s dispatching room so that functional departments as well as company leaders can monitor the current status and direct handling remotely when there are abnormalities on the line. According to Mr. Phong, the camera has a wide field of view, so it helps remote observers to easily detect and accurately assess abnormalities arising on the route such as: fires near the corridor, landslides, vehicles passing photos affect the safe operation of the line. Along with that, the camera helps to quickly access the scene to locations in flooded areas, thereby capturing the situation of the route section and directing appropriate handling. Since installing the camera up to now, PTC2 has detected 35 unusual incidents that may affect the safe operation of the line, thereby taking appropriate measures to ensure operation. In the coming time, PTC2 will continue to research on technology solutions for cameras, solutions for data transmission and analysis, image processing, and propose equipment and installation at necessary and important locations for roads. cord.

Prestige X was born by combining inspiration from the company’s first headphone prototype (SR80) and first metal headset model (SR325). The design of the headset is completed in an open form with a completely new Brooklyn paint, making it more impressive even though the e-Series (2014) was once a very successful design. Prestige X is for entry-level players, the names of these headphones are also easy to remember and distinguish: SR60x, SR80x, SR125x and SR325x. Adding an “x” element to the back of the product’s name is also a way of reminding the company of the values ​​​​that previous headsets have created for users. What’s more, it’s a price that’s completely accessible to everyone. In terms of upgrades, the Grado Prestige X Series uses a 4th generation driver with new magnets to improve audio performance. The voice-coil and diaphragm have both been redesigned to reduce travel distortion. The results show that the Grado Prestige X Series has better dynamics. In addition, users can use the headset directly with a variety of mobile devices without the need to pair an additional amp. Besides upgrading the driver system, Grado also replaced the conductors with super annealed copper with 8 cores for SR125x, SR225x, SR325x models and 4 core transformers for SR60x and SR80x. In the end, the overall exterior design is not much different from the old version. However, the materials made from the headband to the earpads have all been upgraded to create comfort for the user. All but the SR325x retain the leather headband wrap covered in animal-friendly synthetic protein material. Grado has updated the Prestige X Series line to the market with the reference price: SR60x – £109.95 (about 3.6 million VND)
SR80x – £129.95 (about 4.2 million VND)
SR125x – £189.95 (about 6.2 million VND)
SR225x – £249.95 (about 8.1 million VND)
SR325x – £329.95 (about 10.8 million VND)

Improve quality of life Immediately after opening the contest for the second time, Nguoi Lao Dong Newspaper has received many articles from experts, scientists and businesses. Each work is a plan, solution, idea or contribution to Ho Chi Minh City. Writing about the strategy of building a smart city, Assoc. Prof-Dr. Tran Hung Son (University of Economics and Law, VNU-HCM) suggested that Ho Chi Minh City should propose and coordinate with the central government to build a legal framework for the city. nationwide smart city governance, as well as regulations to manage technology risks; increase revenue and diversify financial sources for smart city development; develop human capital and promote the inclusivity of digital technology… Awarding the 1st “Listening to the people’s design” contest Photo: HOANG TRI Dr. Son Thanh Tung and MSc Truong Thanh Thao said that improving the quality of life is the goal of building a smart city through the provision of public services and urban utilities more efficiently. The trend of smart city development needs to be integrated with the social city trend. In which, the participation of people in community activities and in the decision-making process is a key issue in order to create a just society. Focusing on green areas in urban areas can be considered as a premise to build a smart city – a green city, Assoc. Prof. Dr. Phan Thi Hong Xuan, MSc. Vo Thanh Tuyen (University of Social Sciences and Humanities) VNU-HCM) proposes to include green criteria in planning, design and construction in all types of housing, regardless of resettlement, social housing or commercial housing. Ho Chi Minh City can consider encouraging solutions to have more green building investors with the goal of sustainable development… “Maestro” in entrepreneurship Ho Chi Minh City has strongly revived the spirit of entrepreneurship, what needs to be done now is to solve the problem of starting a business effectively. According to Dr. Huynh Trung Minh, Ho Chi Minh City can become a “conductor” who plays the role of connecting the “leading cranes”, “eagles” with start-ups; creating an environment to attract excellent start-up ideas… Ho Chi Minh City has enough scope and resources to become a start-up center, an innovation center of the whole country, attracting talents, importantly, how do and when to do. CEO Tran Anh Tuan (The Pathfinder Consulting Company) commented that a “chief architect” is needed to design the startup system in Vietnam to draw a general picture of startups as well as the startup process. for each field, standardized curriculum for each field, mentor training program, ecosystem building strategy. Along with that is a support mechanism for start-ups to promote. Sihub CEO Huynh Kim Tuoc affirmed that Ho Chi Minh City has a full basic foundation and is a connection point between the country and the world, a gateway to access the world. What must be done is to remove barriers to start-up development and innovation. According to lawyer Pham Ngoc Hung (Vice Chairman of Ho Chi Minh City Business Association), in order to start a business to become a brand of Ho Chi Minh City, it is necessary to arouse creative aspirations and bring businesses a favorable business environment profitable and stable. Finding a unique identity for Ho Chi Minh City Many experts have also submitted plans for the theme “Urban cultural identity of Ho Chi Minh City”. MSc Nguyen Hieu Tin (Head of the Department of Vietnamese Studies, major in tourism, Ton Duc Thang University) analyzes the more modern the world, the more “flat” it is, the more it needs its own. Locating the culture of Ho Chi Minh City, finding its own identity, creating a highlight, bearing the “brand” character is one of the important things that needs attention and orientation in sustainable development in the future. Dr. Nguyen Thi Hau proposed to develop the cultural industry faster and stronger, turning Ho Chi Minh City into a modern cultural center of the region. Meanwhile, author Ton That Tho proposed to bring technology into museum activities. Because in the current trend, the “virtual” museum is a development trend, bringing the museum closer to the public, meeting the needs of online sightseeing and research. Implementing a “virtual” museum to lead the public to the “real” museum is the shortest and most effective way.

SINE Gateway 2 (Nano Platinum Edition) – 80A power source filter, 20kg “huge” chassis, filter by choke roll The first impression of SINE Gateway 2 is the extremely solid metal block design, weighing up to 20kg, completely without screws, combining shockproof and vibration-canceling materials with pure graphite particles. All components, wires, and component sockets inside Gateway 2 are optimized for current transmission with CRYO technology, which is cold-annesed at -196 degrees for two days, and 8 outlet sockets are plated with platinum precious metal, which helps increase the efficiency of dynamic performance reproduction. SINE Gateway 2 has a total of 8 output sockets, designed to sound down on a very thick metal surface, this thick aluminum block both prevents electromagnetic interference from penetrating (from the environment) and helps to secure the power cord plug. than. Filter noise with 2 choke coils The only technology that is considered to be SINE equipped for Gateway 2 is the choke filter. This technique is not new, but because of its high cost, choke filtering is usually only used by expensive lamp amplifier manufacturers. The advantage of choke filtering is noise optimization, but harmonics are almost kept intact.

Reference price: 87,000,000 VND S-60A Pt Edition large power source filter – Dual magnetic conduit technology, precious metal plated socket The S-60A Pt Edition is an upgraded version of SINE’s very popular S-60A power filter. This device has an impressive design in the shape of a poweramp, the front panel is up to 10mm thick, allowing anti-shake and EMI/RF interference. To optimize resonance, SINE S-60A Pt Edition is also equipped with a special layer of vibration-absorbing material in the form of graphite crystals lining the bottom. This power filter has 8 outlet sockets arranged on the back, divided into 2 sockets for digital devices, 2 sockets for poweramp and devices that require large current levels and 4 sockets for analog devices. In particular, the sockets have been upgraded from the gold-plated version to the platinum-plated precious metal, helping to increase the efficiency of detail reproduction and especially the dynamics. SINE S-60A Pt Edition uses filter technology with a pair of magnetic pipes that can withstand loads up to 60A, which not only prevents noise from affecting detail, harmonic distortion, but also provides a much quieter background. The input CB of the S-60A Pt and all its sockets and internal wires have undergone a 48-hour cooling treatment with a temperature of -196°C. The circuitry prevents overload or sudden surge of current due to electrical problems. from the input is also fully equipped by SINE for S-60A Pt Edition. In its product range, SINE also offers smaller capacity power filters such as the S-30A Pt Edition, S-20A and S-2X.

Reference price: 52,000,000 VND SINE Caspian 5 Pt – Isolation transformer 5 KVA, equipped with Cyro cold filter socket and Platinum plating SINE Caspian 5 Pt has an anti-vibration aluminum chassis design up to 8mm thick with all components such as CBs, wires, sockets being treated with Cyro cold filtering to optimize the molecular structure of the conductor surface. The 8 rear outlet sockets are plated with platinum instead of gold as usual. The heart of the SINE Caspian 5 Pt is a 5000 VA toroidal transformer wrapped around with a noise-proof copper plate. With the advantage of blocking and isolating all kinds of noise from the upstream power but almost unchanged the characteristics of the line, along with a large capacity of up to 5 KVA, SINE Caspian 5 Pt is chosen by many audiophiles to equip systems. ultra hi-end big.

Reference price: 88,000,000 VND SINE SAT-3KV – 3000 VA capacity isolation transformer, vertical chassis design Designed specifically for providing isolated power to high-end hi-end systems, the SINE SAT-3KV inherits many technologies from the flagship Caspian 5 Pt model. This model has a capacity of 3KV, 8 outlet sockets with a vertical chassis design, allowing for compact layout in the corner of the room, built-in display of output voltage indicator. Duplex oultet sockets (USA) are also applied by SINE with Cryo cold annealing process along with gold plating to optimize contact points. SINE SAT-3KVA uses a toroidal transformer with high purity copper quality, but is not shielded like the Caspiam 5 Pt model.

Reference price: 55,000,000 VND SINE SRT-5KV Pt Voltage Stabilizer – Prevents noise and stabilizes output voltage for home cinema and audio systems The output voltage stabilizer or voltage stabilizer for hi-end audio systems requires special techniques to ensure noiseless and clean power supply. SRT-5KV Pt is specially designed for audiophiles by SINE, the chassis is made of thick aluminum, the bottom has anti-vibration pins, with a display of the output voltage. In Vietnam, there are many areas where the grid power supply is not stable, SINE SRT-5KV Pt ensures to receive variable input power from 195 V to 245 V, while providing stable output in customizable levels from 195 V to 245 V. 205 to 235V with an extremely fast response rate of only about 15-20 milliseconds. For small and medium-sized systems, SINE also offers the SRT-3KV voltage stabilizer design with a capacity of 3000VA.

Reference price: 110,000,000 VND SINE NIDAS HC+ power lead – 30A load-bearing, anti-interference, anti-vibration In the power supply system for the hi-end system, the set of 3 CBs – wall sockets and power leads play a very important role. These components are the starting point for providing a clean, stable power source. NIDAS HC+ power lead is a very successful product of SINE, with good load response and anti-interference ability on the transmission line, used to connect from the floor CB to the wall socket of the listening room or go from the main power meter to the listening room. . One of the most important requirements of the upstream conductor is the load bearing and thermal resistance to ensure electrical safety. SINE NIDAS HC+ wire has a heat-resistant layer of up to 105 degrees Celsius. In addition, SINE is equipped with a laminated copper foil armor to prevent electromagnetic interference along the way. The NIDAS HC+ power cord has a coaxial structure consisting of 5 wire cores of 10AWG size (equivalent to 5.26 mm2), with a load capacity of up to 30A. In addition to the 5 main wire cores, SINE is specially equipped with 2 very soft rubber tubes, which have good vibration absorption effect, optimize electron transmission, this is a special technique only applied in wires expensive audio source. Of course, NIDAS HC+ conductors are cryo-treated by SINE at -196 degrees Celsius. In addition to NIDAS HC+, SINE also has other upstream leads such as Zunmu, Nidas…

Reference price: 7,500,000 VND/meter SINE CYRO MCB – CB (Aptomat) is optimally designed for audio systems SINE’s CB is highly appreciated by audio players, providing a very clear sound effect, increased power, better control, and the detail separation between the two channels is also significantly increased. . SINE’s CBs are sourced from famous German brands, which handle cold annealing and optimize contact points.

Reference price: 3,400,000 VND SINE SW-2XT US (Nano Platinum) table top wall socket – EMI/RF anti-interference, 2-layer phosphor bronze and platinum precious metal plated contacts SW-2XT US (Nano Platinum) is SINE’s most advanced double wall socket equipped with impressive transmission and anti-interference and anti-vibration technologies. The SW-2XT US socket has a very thick aluminum block exterior with beautiful milling lines. This cover has a very important effect, preventing external electromagnetic interference from contaminating the power source. In addition, this design also contributes significantly to anti-vibration and helps the power cord plugs to be firmly fixed, especially for large and heavy diameter power cords. The two outlet sockets of SINE SW-2XT, in addition to being cold annealed by SINE Cryo technology, are also covered with 2 layers of plating at the contact points. These two plating layers are phosphor bronze and platinum, respectively. Thanks to this technique, the SW-2XT socket delivers enhanced audio performance in many factors. First, the background is quieter, the dynamic is good, then the listener can clearly feel the microphone detail. Besides the SW-2XT US (model with SW-2XT long mask (L)), SINE also has more affordable wall sockets such as SW-2PT US and SW-2G US.

Reference price:

SINE SW-2XT US (Nano Platinum): VND 4,500,000

SINE SW-2XT (L) (Nano Platinum): VND 4,800,000

SINE SW-2PT (L): 3,200,000 VND

SINE SW-2G US: 2,800,000 VND SINE SW-2PT US Wall Socket (Platinum) Epilogue Owning a full ecosystem of hi-end electrical equipment from power lines, filters/stabilizers, isolating transformers to sockets, wires… helps SINE become one of the brands that provide system The most comprehensive and efficient power supply system for hi-end and home cinema.

Recently, the team upgraded the technique to power and program the multipoint biostimulator from a single transmitter. Thanks to new research, electrical and computer engineer Kaiyuan Yang and colleagues at the George R. Brown School of Engineering (Rice University) won an award at the Society of Electrical and Electrical Engineers’ Custom Integrated Circuits Conference death (IEEE). The researchers performed experiments showing that an alternating magnetic field can be controlled by a battery-powered generator outside the body. The transmitter can be mounted on a belt or harness, powering and programming two or more implants at least 60 millimeters away. The implant can be programmed with a delay measured in microseconds. That could allow them to coordinate the activation of multiple wireless pacemakers in individual heart chambers, says engineer Yang. “Our study shows that it is possible to program the implants to stimulate in a coordinated pattern. We sync every device, like a symphony. That gives us a lot of scope in stimulant treatments, whether it’s for the heart rhythm or the spinal cord.” The scientists also experimented using small implants. Each tissue is about the size and weight of a vitamin. Experiments performed on hydra vulgaris rodents have demonstrated that, for at least a short distance, such devices can stimulate two separate hydras to contract. Then, activate a fluorescent tag to respond to electrical signals and respond at controlled amplitudes along the rodent’s sciatic nerve. “A study on spinal cord regeneration showed that multipoint stimulation in a certain pattern helps restore the nervous system. Several clinical studies are underway, but all are using desktop devices. There is no implantable tool that can do this,” said engineer Yang. Lab devices, called MagNI (for electromagnetic nerve implantation). MagNI was introduced early last year as a cordless spinal cord stimulator for power and programming. That means the wire does not need to be passed through the patient’s skin. Because, putting the wire through the skin is a method that can cause infection.

Wireless electricity does not emit radiation. This picture seems impossible at first glance but is being realized gradually through an idea called “wireless electricity”. From the Tesla coil From 2021, Powerco, New Zealand’s second largest electricity distributor, will work with start-up Emrod to bring wireless electrical technology to life. It all stems from the ambitious dream of the Serbian engineer, Nikola Tesla. Back in 1899, in the city of Colorado Srpings, USA, Nikola Tesla created a 50m high coil with a current of 12 million volts, called the “Tesla coil”. The coil has an activation switch. Just flip the switch, a flash will flash from the coil, carrying wireless current to light up 200 nearby bulbs. During the test, no one was injured. This experiment hypothesizes that the Earth can conduct electricity by itself without the need for a transmission device. And the technology of transmitting electricity in the air can be quite safe for humans or other living things. After that, Nikola Tesla continued to experiment with electromagnetic induction, discovered by scientist Michael Faraday from the 1820s. According to this experiment, around the electromagnet has a changing magnetic field, creating an electric current in a wire is nearby. Electric currents in a wire create electrical energy in the air, which can exist as a magnetic field. From his experiments, he modified and perfected the Tesla coil, the first system to wirelessly transmit electricity. The Tesla coil consists of two parts: a primary coil and a secondary coil. Each coil carries its own capacitor. The two coils and capacitors are connected by an ignition slot and can produce a spark. In general, the Tesla coil is two open circuits connected to an ignition slot. It needs a source of high voltage messages, passed through a transformer to produce thousands of volts. First, the primary coil will be connected to a power source. It will absorb electrical charges like a absorbent sponge. The primary coil is usually made of copper, a material that conducts electricity well, as it must be able to withstand very large charges and many electric waves. When the primary coil’s capacitor has accumulated a lot of charge, it will escape and create a magnetic field. Magnetic energy induces an electric current in the secondary coil. The compressed voltage through the air between the two coils creates a spark in the air. When the charged charge in the capacitor of the secondary coil rises, it will escape in the form of an electric arc. When this happens, an energy is enveloped between the two coils. The high frequency voltage can light fluorescent bulbs a few feet away without the need for a transmitter. Wireless power network infrastructure Inspired by Nikola Tesla’s invention, New Zealand-based Greg Kushnir founded the Emrod Energy Company. The company plans to deploy wireless power infrastructure. To do this, Emrod uses a system consisting of a power source, a special antenna capable of converting radio waves into electricity, called “rectenna,” the base stations. The transmitting antenna converts electricity into microwave particles. In the area using wireless electricity, Emrod installs base stations fitted with square pads. The microwave particles transmitted to the receiver will be gathered into a beam, leading to the rectenna in the area. The rectenna’s job is to convert the microwaves back into electricity. The reason that the receiver is square is because it needs a large surface area, which helps to collect all microwaves passing through. “We have developed a long-range wireless transmission technology,” said Greg Kushimir. The technology itself has been around for a while. Our project is a continuation of Tesla’s achievements ”. However, Kushimir commented that Tesla can generate alternating current from the Tesla coil but he cannot control the electric beam at a long distance. In contrast, Emrod can keep the electric beams tightly connected, stable transmission thanks to two technologies. First, it must be mentioned is the technology related to transmission lines. The microwaves passing through the collimator are converted into a parallel beam of light. Next, Emrod used metamaterials designed in microscopic samples, highly efficient in microwave reception. The Rectenna acts like an invisible cable. Their job is to transmit electricity to the people. By eliminating the traditional wiring, Emrod can bring electricity to areas with difficult terrain, difficult to access because the infrastructure here does not support electricity networks. This technology also has a positive impact on the environment as people do not have to depend on generators that run on gasoline or oil. Power generation stations can also be quickly installed after a natural disaster. Thus, bad weather does not affect the wireless power transmission system. However, Kushimir expressed the challenge now is communication and public orientation. Like the advent of 5G, many people may oppose this idea due to concerns about the negative effects of radiation. But Kushimir asserted, the wave beam transmitted in the new technology does not emit radiation harmful to humans.