6 facts
Composed of carbon nanotubes, Vantablack absorbs up to 99.965% of visible light, making it appear as a void. It's so dark that it's difficult for the human eye to perceive its three-dimensional form, creating an illusion of depthlessness.
Unlike regular ice, dry ice is solid carbon dioxide that sublimates directly into a gas at room temperature, without melting into a liquid. This property makes it useful for refrigeration where water residue would be undesirable, such as shipping perishables or creating fog effects.
Diamonds have the highest thermal conductivity of any known material, meaning they rapidly draw heat away from your skin when touched. This quick heat transfer makes them feel noticeably cooler to the touch compared to other objects at the same ambient temperature, a property used in diamond testing.
While diamonds are exceptionally hard, materials like Wurtzite Boron Nitride and Lonsdaleite have been theoretically or experimentally shown to be harder. These are rare and don't occur naturally in large quantities.
One ounce of pure gold can be drawn into a thread 5 miles long, or hammered into a sheet so thin it covers 100 square feet. This extraordinary malleability and ductility are due to its metallic bonding.
Unlike crystalline solids with ordered atomic structures, glass molecules are arranged randomly, like a liquid. Over extremely long periods, glass can flow, though imperceptibly, giving rise to the misconception that ancient window panes are thicker at the bottom.