Science story
1g of salt dissolved in 1g of water, why is the total mass not 2g?
Considering the usual four-dimensional problem, what is the final total mass of a pound of salt dissolved in a pound of water?
Problem
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Articles about Problem
1,033 published items.
Space science
NASA engineers are having to search for manuals from 45 years ago to fix the problem of Voyager 1
Voyager 1 is a 722 kg spacecraft operating beyond the Solar System and beyond, launched on September 5, 1977.
New technology
The absolute advantage of light quantum chips: Shorten 9,000 years of computation to 36 millionths of a second
If today's most powerful supercomputers need 9,000 years to solve this problem, light quantum chips only need a few millionths of a second.
Photo library
South African artist paints pictures from plastic waste, the results are incredible works
With plastic waste on the rise around the world, Buthelezi is using her work to bring attention to and combat the problem.
Discover science
Science accidentally finds a 'miracle battery' that can change the world
A recent discovery could revolutionize batteries and change the way we power the world.
Scientific application
A really smart toilet, even with a camera to detect the owner's anal pattern
Together with an AI algorithm, it can tell you if you have hemorrhoids or not?
Flu epidemic
Post-COVID-19: New study finds virus causes brain damage similar to Alzheimer's disease
no symptoms, but for some people, the corona virus will leave a severe impact, also known as post-COVID-19 sequelae
Scientific application
Microsoft has solved the most annoying battery problem, but why have we never heard of it?
Batteries are incredibly useful, but there are a few downsides. For example, they can only store a certain amount of electricity; charging takes time (and not all batter…
Health
What if you don't wash your feet from now on?
Lazy foot washing is very normal for many people, but if this problem will be completely different if you do not wash your feet for a long time.
Health
What is the impact of anger on the body?
Anger does not make us more comfortable, on the contrary, it has a bad effect on our health.
Health
Sleeping more than 8 hours a day and the unexpected harms
Everyone knows that lack of sleep can lead to many serious health problems. But not everyone knows how to sleep longer than 8 hours a day
History
A mathematician has just solved a 4,000-year-old Egyptian puzzle
Ancient math problems have been handed down for centuries, and recently, a mathematician has solved a 4000-year-old Egyptian puzzle...
AI - Artificial intelligence
The Achilles' heel of artificial intelligence, AI is not as omnipotent as people think
At the end of the 20th century, mathematician Steve Smale came up with a list of 18 unsolved problems, the last of which dealt with the limits of human and machine intel…
Scientific application
Denmark produces non-alcoholic beer that 'tastes' like regular beer
Just by solving the problem of taste, non-alcoholic beers promise to bring a new way of enjoying beer that is better for health.
Archeology
Shocking fossils: Having the same problems as humans, super beasts die painfully
The 150-million-year-old fossil has revealed the unexpected cause that could knock down one of the biggest super beasts on the planet.