Biology
Strange wood with the ability to change color: Ranked among the world's top in hardness and durability, Vietnam also grows it
Thanks to its special properties, this type of wood is sold at a quite expensive price.
Hardness
Browse ScienceInfo articles and explainers related to Hardness.
Topic archive
Articles about Hardness
34 published items.
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CrCoNi Alloy - The Hardest Material on Earth
Scientists studied an alloy made of chromium, cobalt and nickel (CrCoNi) and measured the highest hardness of any material.
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Rhodium – The mystery of the most expensive material in cars
Rhodium is a metal with high hardness and light reflection, does not corrode and oxidize, and is often used in exhaust gas neutralizers.
Science story
Have you ever wondered what 2B or HB pencils mean?
Students, students must be no stranger to 2B pencils, which are even more indispensable for those who study fine arts.
Health
A new step in the development of dental treatment materials
The nanocomposite material that researchers from Beihang University, Peking University and the University of Michigan developed is similar to biomimetic enamel with esse…
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Why do toothpaste and cement often harden after some time left in the environment?
US and French scientists have recently discovered the mechanism behind the freezing of toothpaste or cement over time if left in the environment.
New technology
Aluminum 7075 can be welded, the future of cars and aircraft will be more durable and fuel efficient
From the 40s of the last century, people have created an aluminum alloy (called AA 7075) with a hardness equivalent to steel but weighing only 1/3, it promises to be use…
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Going from one surprise to the other is different from the interesting things about all things
Spider raising frogs as pets; healthy human teeth are equivalent to shark teeth; The cost of making a coin is more expensive than their value ... and there are many othe…
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Close up of the first diamond in the world ... 3D printing
By applying stereo Cuban printing technology, a technology company, for the first time in the world, it is possible to create diamonds in every desired shape!
Videos
Video: Hardness test of bone with a hundred ton hydraulic press
Let's experiment with a structure primarily from Calcium, how hard the bones can be, by compressing a piece of the tubular bone of a cow under a hundred-ton hydraulic pr…
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Diamonds are about to lose the title of
People still think that diamonds are the hardest material on the planet. But no, the No. 1 diamond is about to wobble by these new materials.
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The hardest materials on the planet
Thanks to advanced technology, scientists have come up with these
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Unknown things about nails
Nails are one of the characteristics that distinguish primates, including humans, and other mammals. They are essentially abraded claws.
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How to tie the shoelaces tight: the mystery still has no solution
When more and more buttons are tied, the shoelace is easier to slip, not everyone understands why.
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How to transport stone to build pyramids of ancient Egypt
Physicists at the University of Amsterdam have just discovered a clever trick used by ancient Egyptians to transport heavy rocks during the construction of pyramids.