How Do Fingernails Grow?
Fingernails grow from the matrix. As new cells grow in the matrix, the older cells are pushed out, compacted and take on the familiar…
TellMeWhy
A wonderful and marvelous collection of answers to intriguing questions everyone ask about the world covering almost every subject, from science and history to art, language, mathematics, technology, and homeschooling
How Does a Light Bulb Work?
The light bulb work by giving off light by converting electrical energy into light energy. The light bulb might have been more accurately called…
Which Ink Is Used in Erasable Pens?
Erasable ink used in erasable ball-point pens is a gooey substance that looks like tar. Scientists from The Paper Mate Company invented it by…
Why Does a Robin Cock Its Head to Listen?
The robin does not cock its head to listen. The robin cock its head to look for a worm poking out of its burrow.…
Why Do We See a Ring Around the Moon?
We do sometimes see a ring around the moon. A ring or circle of light around the moon is caused by the refraction, and…