Why are airplane windows oval? In the early 1950s, the world’s first commercial jet was developed and manufactured by De Havilland. This is considered the miracle of the aviation industry. However, after a year of use, the plane fell to pieces right in the sky and within a few months, two more suffered the same fate. Engineers scrutinized the plane’s screws and discovered that the main cause was the square window. With this design, the pressure is higher at the door corners and increases significantly in flight. So the engineers decided to replace it with round or oval windows. Why do airplanes have curved wing tips? During a flight, the pressure on top of the wing is lower than the pressure under the wing. Air tends to shift from high pressure below the wing to low pressure above and around the wing tips. In the past, the wing tips were designed to be straight, causing the airflow to cause serious turbulence. Therefore, the scientists decided to bend the wing tip upwards to reduce turbulence, prolong the durability of the wing and save a lot of fuel during travel. Thanks to this feature, everyone will feel more comfortable during the flight. Why do airplane noses have different shapes? The nose of a military aircraft is pointed, the sharper the nose, the faster it flies. However, if the nose is too long, the pilot cannot see the runway correctly, which is why civil aircraft have round noses. Russian engineers solved this problem in the 1960s. The fastest passenger jet could tilt its nose. During takeoff and landing, the aircraft tilts its nose down and during flight the nose will be brought back to its original position. This strange design is intended to help pilots see the runway better. Why are airplanes painted white? Airplanes are almost always painted white. There are several reasons to explain this problem: Heat Reflection: A plane painted white will accumulate less heat. This is better for passengers and economically beneficial for airlines.
White paint is cheaper than other paints.
Prevent bird collisions: Birds can see reflections from white surfaces better, reducing the risk of collisions with aircraft.
White paint helps reveal small cracks and dents: The paint makes cracks easier to see, identifies problems early, avoids accidents, and makes damage easier to see. Why is the exit on the left? Not all but most aircraft have the main entrance on the left side. There is an explanation: The right side is for luggage (the cargo hatch is also on the right) so it is not safe for passengers.
Some say it’s an old tradition: The train ramp is always on the left.
The aircraft door is installed on the left side, which allows them to park the plane in the passenger area better and move more easily. Why are some planes oddly shaped? You must have heard of stealth aircraft. It has an odd shape to avoid detection by radar, sonar, infrared and other detection means, and to be able to carry more luggage with less fuel consumption. The shape of the plane is inspired by birds. Birds of prey use that shape to increase their range and be less visible. However, these aircraft are often too expensive to be used in civil aviation. How do airplanes look spacious? The designers use a number of tricks to make the plane look taller and more spacious than it actually is. For example, the walls have certain shapes to reflect light correctly. The illumination between the ceiling and the overhead bin makes the ceiling visually taller. Thanks to these tips, people with plane phobia will feel more comfortable. Why don’t pilots have beards? Some airlines ban pilots from growing beards. This is explained that, the beard can cause the oxygen mask to not fit tightly to the pilot’s face and work properly in an emergency situation. In particular, in that case, the pilots must always be alert to save the lives of passengers on the plane.

One of the main causes of melasma is food. Therefore, the first thing to note when handling or handling these foods is to wear protective gloves. At that time, the risk of allergies or other bad skin manifestations will be significantly reduced. Bread with nuts Multigrain breads are considered a popular and popular food among women today because of their palatability and convenience. But you need to know that the nuts and wheat in this food contain a lot of estrogen. And estrogen will be able to alter your hormonal balance and make melasma worse. Soymilk Soy milk is also very popular due to its low fat and calorie content. However, in contrast to these two substances, the estrogen content in soy milk is extremely high. Therefore, your body will face many problems if you consume too much soy milk. You should replace this drink with some type of nut milk (except rice milk) and hormone-free cow’s milk. Tofu Like soy milk, tofu is also made from the same ingredients, so it has a very high amount of estrogen. If you have facial tan, you should use this food less and replace it with other dishes like chicken breast with high protein and low calories. Drying fruits It seems that dried fruit is a food that is not harmful to health, but this is an extremely estrogen-rich dish. It is best to choose low-calorie fresh fruits to replace dried fruit. Fresh fruit also offers more health benefits. But not all fruits are low in estrogen, so do your research before you buy them. Sesame seeds Sesame seeds are loved for their attractive aroma and are often used as a seasoning for many dishes. But experts say sesame seeds are also high in estrogen. Peas Peas and black-eyed peas, in addition to having high estrogen, also contain a lot of starch and calories that are not good for women to lose weight. So if you want your salad to have more starch, replace the beans with corn. To take the best care of your skin, choose and combine it properly to find a rich menu that is always delicious and good for your health!

Recently, consumers were surprised when the giant octopus antennae, which is said to have originated in Japan, was sold at a Vietnamese market at a relatively cheap price. Screenshots Accordingly, on the online market, giant octopus vegetables are for sale with prices ranging from 89,000 to 130,000 VND/kg. Photo: Facebook According to the seller’s advertisement, the giant octopus beard is a limited edition super vip item. Photo: Facebook Fresh octopus whiskers have been cleaned, just defrost and can be used immediately or processed all kinds of delicious dishes according to your preferences. Photo: Facebook The seller also confirmed that the octopus beard is tough, crispy and delicious. Photo: Facebook Ms. Thu (Thanh Oai, Hanoi) said that all over the online market, she saw many people selling giant octopus beards, each article had hundreds of people ordered it, so she also ordered it to try. Photo: Facebook However, when fried or steamed, this giant octopus beard is very pale, fishy and chewy, not crispy and delicious as advertised. Ms. Thu suspects that this type of octopus beard is not Japanese. Photo: Facebook Sharing on Dan Viet, a customer said that the seller advertised as a Japanese octopus beard, but when he received the goods, he saw on the packaging that it was from China. Photo: Vietnamese people Meanwhile, a unit that imports and distributes Japanese octopus in the Vietnamese market revealed that Japanese octopus is sold quite popularly, but guaranteed goods are not many. Photo: Facebook The price of Japanese octopus whiskers arriving in Vietnam ranges from 900-1.1 million VND/kg. On official imported packages, there are enough stamps and labels in Japanese. Photo: Vietnamese people Therefore, consumers should not be cheap, buy goods of unknown origin, goods with no quality assurance. Photo: Facebook Video: How to turn dirty octopus into clean octopus. Source: News VTV24

Especially, nowadays, modern devices like smartphones can provide users with most information including time. But wristwatches are still considered as one of the essential items for men. See time In any case, the core function of a watch is to tell the time. Modern people always need to know about time in everything they do. This is the reason many people wear watches. The watch brings a professional, reliable feeling to the opposite person. Photo: @madbarzjoca. You can use your cell phone or other electronic products to check the time. However, with the prevalence of media, it is easy to get distracted by other news. This has led many companies and businesses to ban the use of smartphones and social media during business hours. If you meet a partner, the opposite person will think that you are checking notifications instead of checking the time, giving a feeling of unprofessionalism. Therefore, the traditional watch is the solution chosen by many people. Has the right function for the situation Nowadays, more and more professional watches are being produced. Such as dive watches, pilots, aviation… For example, divers can only enter the water for a fixed time. Otherwise, they will suffer irreversible damage to the body. At that time, the worker could not carry a mobile phone. A dedicated watch is the right choice for this situation. Experiencers should choose a watch suitable for each specific environment. Photo: WatchTime. Unique accessory Women have a lot of jewelry to choose from such as rings, bracelets, handbags… In contrast, the range of accessories exclusively for men is narrower. Therefore, the watch is the item of choice for men. It helps the experiencer to express themselves, their personality and their own style. In addition, it can be used to combine with many outfits. With its versatility, men can wear the watch on any day or event. Like a diamond ring or a chain of pearls, vintage watches are often seen as the final touch, adding a chic, sophisticated touch to an outfit. Watches are a fashion accessory that elevates style. Photo: Stocksy United. As an investment ‘s pen Von Doren think watches can be great investments. In particular, iconic designs, limited editions or made from expensive materials like gold tend to increase in value over time. If you are lucky to own such a special watch model, you have the ability to profit in the future. One of the advantages of investing in a watch is that it doesn’t cost too much. If you own a mechanical watch, men should have it serviced at least every 4-5 years. For quartz watches, the tester needs to replace the battery as soon as it shows signs of running out of power (otherwise the acid in the battery can leak and destroy the movement). Watches will last long if well cared for and maintained. Its lifespan can be hundreds of years. 5 things men need to know to wear a beautiful watch Watches are an effective assistant in terms of time, helping to enhance a stylish look for men.