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Causing large wounds like craters, how do supersonic bullets threaten people?
Supersonic bullets leave wounds as large as craters, but do not penetrate skin and flesh as solids like traditional shots.
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Articles about PER
374 published items.
Health
Controversy about the fruit that is said to prolong life by 5 years
Studies show that in rats, supplementing with two cups of grapes per day reduces fatty liver disease, increasing life expectancy. The authors believe that it also works…
Health
Warning 'mushroom pandemic': 1.6 million deaths per year, worrying rate of evolution
In a hotter world, people are facing a lot of difficulties from epidemics.
Scientific application
The train can absorb 6,000 tons of CO2 per year
CO2 Rail, a start-up in the US, plans to capture CO2 directly from the air with modified railcars running across the country.
New technology
This chip is less than 1 square centimeter processing 2 billion images per second
Engineers at Penn State University have created a chip that can process and classify nearly 2 billion images per second.
New technology
Australian company provides mummification service waiting for rebirth
Those wishing to be reincarnated at some point in the future will have the opportunity to make this seemingly impossible reality for about 150,000 USD.
Photo library
Tiny kingdom in the middle of Europe: The richest place in the world but very few people know the name!
Not only possessing the highest GDP per capita on the planet, Liechtenstein is an ancient land, beautiful in a completely different way.
Computer science
AMD has just helped the US regain the throne in the field of supercomputers
It was the first supercomputer to achieve exascale performance, capable of processing 1.1 trillion operations per second.
Scientific works
Build a factory to produce 13,700 tons of artificial meat per year
Good Meat Company will build a factory with 10 of the largest bioreactors in the world to grow meat, each with a capacity of 250,000 liters.
New technology
Cheap gel membrane can suck water every day out of thin air
Researchers at the University of Texas at Austin have now demonstrated an inexpensive gel membrane that can suck many liters of water a day out of the air.
Environment
How Israeli startups 'turn air into money'?
Each year the world emits about 50 billion tons of greenhouse gases, mainly through the burning of fossil fuels such as coal, oil and gas. This is the main cause of glob…
Space science
The meteor shower is about to peak at 50 streaks of light per hour
Astronomy buffs around the world will get the chance to watch the Eta Aquarids meteor shower peak mid-week.
Environment
By 2030, there may be 1.5 natural disasters every day
The world will face 1.5 disasters per day, or 560 disasters per year, by 2030 if humanity continues to increase the earth's temperature and ignore the risks of climate c…
Discover science
The US Navy first used a laser to shoot down a drone, super cheap cost only 1 USD / shot
This laser weapon has an almost endless source of ammunition, the cost per shot is very cheap.
Space science
The US Space Command announced a secret kept secret for 3 years: The object has terrible speed!
The US Space Command, after 3 years of review, announced the existence of an object with a speed of 58,333 meters per second!