In the hot (yellow) water, the water molecules are slightly further apart than in the cold (blue) water. The hot water is less dense and floats on the cold water. When the cold water is placed on top, ...

Powder is a collection of single solid particles, which in most cases may be considered a basic unit. Powder is typically comprised of solid particles, interparticle voids, as well as open and closed ...

But what does that mean? The simple answer is how heavy something is for its size. If something seems very heavy for its size (like a heavy metal object), we say it is more dense. If something seems ...

Inside the experimental instrument: A silica nanoparticle levitated in a vacuum is illuminated by a green laser beam. Courtesy: Y Zheng Physicists in China have developed a technique for ...

A new technical paper titled “Facilitating Small-Pitch Interconnects with Low-Temperature Solid-Liquid Interdiffusion Bonding” was published by researchers at Aalto University in Finland. “The trend ...

Students will be able to explain that the density of a substance has to do with how heavy it is compared to the size of the object. Students will also be able to explain that density is a ...