Who invented the cat door?

Who invented the cat door?

In an apparent early modern example of urban legend, the invention of the pet door was attributed to Isaac Newton (1642–1727) in a story (authored anonymously and published in a column of anecdotes in 1893) to the effect that Newton foolishly made a large hole for his adult cat and a small one for her kittens, not realizing the kittens would follow the mother through the large one.

Which bone is located in the human skull?

With that in mind, as one possible classification, the human skull could for example be said to consist of twenty two bones: Eight bones of the neurocranium (occipital bone, 2 temporal bones, 2 parietal bones, sphenoid bone, ethmoid bone, frontal bone), and fourteen bones of the viscerocranium 

How many words did Shakespeare make up?

Words Shakespeare Invented. The English language owes a great debt to Shakespeare. He invented over 1700 of our common words by changing nouns into verbs, changing verbs into adjectives, connecting words never before used together, adding prefixes and suffixes, and devising words wholly original.

Who owns all the land in Canada?

All physical land in Canada is the property of the Crown, Queen Elisabeth 11. There is no provision in the Canada Act, or in the Constitution Act 1982 which amends it, for any Canadian to own any physical land in Canada.

Why is there no wind on the equator?

The trade winds coming from the south and the north meet near the equator. These converging trade winds produce general upward winds as they are heated, so there are no steady surface winds. This area of calm is called the doldrums.

What company invented the first Laser Printer?

Unlike the company’s Xerography process, however, Xerox had to share the laser printer market. IBM and Canon soon developed competing products. Xerox PARC Scanning Laser Output Terminal (SLOT) Gary Starkweather prototyped the first laser printer by modifying a standard Xerox office copier.

How long is human gestation from conception?

The average length of human gestation is 280 days, or 40 weeks, from the first day of the woman’s last menstrual period. The medical term for the due date is estimated date of confinement (EDC). However, only about four per cent of women actually give birth on their EDC.

Why is a lemon so sour?

If you’ve ever taken a bite out of a lemon, you already know they pack some serious sour power. This is because they contain citric acid, which is a weak organic acid found in many fruits and vegetables. True to their name, citrus fruits have particularly high concentrations of citric acid.