In a vacuum jar, a large part of the air inside was removed just before sealing it. Air is made up of many small molecules...
An elastic band is typically made of a material called an elastomer polymer. A polymer is a long chain formed of small repeated chemical units...
Fogging is simply water in the form of tiny droplets, which appear when the water vapor present in the air cools down quickly. This phenomenon...
Ballpoint pen ink is a mixture mainly composed of dyes or pigments, mixed with an oily or viscous solvent. This viscosity, in other words the...
Wool and cotton fibers have very different shapes and structures. Cotton is mainly composed of cellulose, a plant molecule that quickly absorbs water in a...
Fog is simply water vapor present in the air that turns back into liquid upon contact with a cold surface. Warm air can hold much...
The cut of the diamond is truly THE key criterion that determines how the stone will sparkle. If it is well cut, light enters the...
During a lucid dream, the brain exhibits a particular activity, notably in the prefrontal cortex, an area involved in decision-making, self-criticism, and self-awareness. Normally, during...
The Moon rotates on its axis at exactly the same rate that it orbits the Earth. This is called synchronous rotation. Basically, it takes about...
