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Who invented the microwave oven?

Radarange - The first microwave ovenThe microwave oven was invented by mistake when an engineer, by the name of Percy LeBaron Spencer, noticed that the radiation from a magnetron tube he is testing melted the chocolate bar he had in his pocket.

During World War II, Spencer was one of the leading experts in radar tube design working for Raytheon, a weapons and military  electronics contractor associated with the American Department of Defense. He headed the division tasked to develop and produce combat radar equipment for M.I.T.’s Radiation Laboratory.

while building magnetrons one day, Spencer noticed the candy bar he had in his pocket had melted while he was standing in front of an active radar set. Intrigued, he investigated on what caused the candy bar to melt. He experimented with food, including popcorn kernels, which became the world’s first microwaved popcorn.

Spencer then took a kettle and cut a hole on its side.  He placed a whole egg in the kettle and positioned the magnetron to direct the microwaves into the hole. The result was the egg exploding in the face of one of his co-workers, who were looking in the kettle to observe.

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Do Lobsters Really have Teeth in Their Stomachs?

If you happen to get up close and personal with a live lobster, don’t worry of getting bitten through its mouth. Be mindful of its claws or pincers which are very powerful and can tear through human flesh.  While lobster have mandibles that are used to tear food apart, they do not have teeth in their mouths to chew their meals.  However, they do have teeth-like projections in their stomachs which are used to grind their food. The teeth-like projections look like molar surfaces and are called the “gastric mill.”

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Can a Cockroach Live without Its Head?

Yes, up to a week. Cockroaches are said to be one of the most tenacious creatures on earth and are often cited as the most likely survivors of a nuclear war. They can easily adapt to, and thus survive, harsh conditions.

Another strange fact about the cockroach is that it can survive without its head for up to a week. While humans and other animals are considered worm food the instance their heads are chopped off, a headless cockroach will continue to live much longer than other decapitated creatures.

This is because cockroaches have unique nervous and respiratory systems which means that they can breathe even without their heads.  They also do not bleed to death when their heads are chopped off because they don’t have a huge network of blood vessels like that of humans and other animals. Any wound is immediately sealed off by clotting. In fact, cockroaches do not need blood to supply oxygen to every part of its body. They breathe through spiracles which deliver air to each cell of the body through a set of tubes called tracheae.

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Is it true that elephants are the only mammal that can’t jump?

Yes, it is true that elephants cannot jump, if jump refers to the state of having no feet on the ground at the same time after propelling oneself from a stationary position. The elephant’s weight makes it physiologically impossible for it to do so plus the fact that the bones on its feet are more closely packed together than other mammals.  Thus, they do not have the flexibility or spring mechanisms that would enable them to jump. Furthermore, elephants don’t really like to have more than one foot off the ground at once.

However, the elephant is NOT the only mammal that can’t jump. Sloths, rhinoceroses and hippopotamuses also known to be non-jumping mammals. But unlike elephants, it is possible for these animals to have all four feet off the ground when they run.

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Why are buttons on men and women’s shirts placed on different sides?

The reason why men’s shirts have their buttons on the right side while women’s garments have theirs on the left stems from opulence and convenience. In the 19th century, only affluent women can afford clothes with buttons. And if you are a well-off lady during those days, you don’t dress up by yourself, you have chambermaids to dress you up so their buttons were placed on the side most convenient for right-handed servants. The idea must have came from dressmakers who assist clients during fittings.

In the case of men’s buttons, even the wealthiest bloke of the olden times generally dressed themselves up, even if they have servants who can very well assist them.  Thus, the buttons are on the right side to make fastening or unfastening a piece of garment quicker and easier for the right-handed man. This proved to be useful during unexpected duels where gentlemen can easily unbutton their coats with their left hand while drawing their swords with their right.

 

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