What Makes a Boomerang Come Back?
What Makes a Boomerang Come Back? It is the built-in skew or twist in a boomerang combined with its spinning...
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Which Poisonous Gas Has a Sweet Smell?
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Would You Prefer an Electric Vehicle?
Most recent articles
Why Does a Pair of Identical Twins Look Alike?
Why Does a Pair of Identical Twins Look Alike? If you’ve ever seen a pair of identical twins, then you...
Why Do Some Cars Need Aerofoils?
Why Do Some Cars Need Aerofoils? Racing cars capable of moving at speeds well in excess of 100 mph need...
What Are Emojis and How Are They Different from Emoticons?
What Are Emojis and How Are They Different from Emoticons? Emojis are ideograms and smileys used in...
How Is Ink Made?
Ink is made from a pigment, or dye, and a liquid, called the vehicle, in which the dye is dissolved. There...
When Was the First Supersonic Flight?
When Was the First Supersonic Flight? Supersonic flight is one of the four speeds of flight. They are called...
What Is a Vacuum?
What Is a Vacuum? A vacuum, in theory, is a space entirely devoid of matter. But no method has been devised...
What Is a Duct Tape and Why Is It Called So?
What Is a Duct Tape and Why Is It Called So? According to etymologist Jan Freeman, the story that duct tape...
Why Are There Many Kinds of Saws?
Why Are There Many Kinds of Saws? Saws are of many shapes and sizes, according to the special purposes for...
Where Is a Needle Beam Used?
Where Is a Needle Beam Used? This has nothing to do with needles and nothing to do with light. A needle beam...