Tools are any object (typically a physical object) that can be used by a life form (typically a human) to perform a function. This includes instruments used for the sciences, machines, equipment, devices, and more. For the purposes of this section is a “catch-all” for usable objects so this includes all tools, objects, and inventions not strictly meant as art.

Humans Explode or Freeze in Space Without a Spacesuit

What happens with no suit in space?

Contrary to popular belief, humans do not explode or freeze in the vacuum of space when not wearing a spacesuit. While exposure to such an environment without protection is extremely dangerous and would lead to death within minutes, the human body does not explode or freeze. It expands but skin is strong and would keep the body intact.

Edison and Tesla Were Enemies

Did Edison Invent Anything?

Nicola Tesla and Thomas Edison were rivals, not enemies. Tesla and Edison butted heads publicly, but generally respected each other.

The Printing Press Changed the World

The printing press (invented by Johannes Gutenberg in 1440) changed the world during the Renaissance, and ushered in the Scientific Revolution, Enlightenment, and Modern Age.

Glass Can Be a Liquid

Glass, in any form, is not a liquid or a supercooled liquid, and it does not “flow” in its solid state. Glass is considered an amorphous solid, or just “glass.”

3D is a New Technology

Is 3D a New Technology?

3D was invented in 1838, predating photographs. Stereoscopic cameras were popular in WWII, and many 3D images and videos remain intact today.