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.

Where does uncle sam name come from?

The origin of the term Uncle Sam, though disputed, is usually associated with a businessman from Troy, N.Y., Samuel Wilson, known affectionately as “Uncle Sam” Wilson. The barrels of beef that he supplied the army during the War of 1812 were stamped “U.S.” to indicate government property.

Why is it called the Silver Screen?

A silver screen, also known as a silver lenticular screen, is a type of projection screen that was popular in the early years of the motion picture industry and passed into popular usage as a metonym for the cinema industry.

How hot does it get on Mars?

The temperature on Mars may reach a high of about 70 degrees Fahrenheit (20 degrees Celsius) at noon, at the equator in the summer, or a low of about -225 degrees Fahrenheit (-153 degrees Celsius) at the poles.

Why do lakes freeze from the top down rather than the bottom up?

The reason why ice forms on the top of lakes and ponds is that once water cools below 39 degrees Fahrenheit, it becomes lighter and less dense the more it cools. This means that water expands as it freezes into ice. As a result, ice takes up more room than the water it was made from.

How many colors are in the spectrum of visible light?

Newton divided the spectrum into seven named colors: red, orange, yellow, green, blue, indigo, and violet.

What car holds the fastest Nurburgring time?

After the Porsche 911 GT2 dethroned the Lamborghini Huracán Performante in 2017, it took Lamborghini less than a year to reclaim the title of fastest Nurburgring lap-time as the Aventador SVJ clocked in a 6:44.97 second lap in 2018.

Which states split their electoral votes?

These states allocate two Electoral Votes to the popular vote winner, and then one each to the popular vote winner in each Congressional district (2 in Maine, 3 in Nebraska) in their state. This creates multiple popular vote contests in these states, which could lead to a split Electoral Vote.