How often do Friday the 13ths occur?

How often do Friday the 13ths occur?

Months that begin on a Sunday will always have a ‘Friday the 13th’.

Is light an energy?

Electromagnetic energy is the same as radiation or light energy. This type of kinetic energy can take the form of visible light waves, like the light from a candle or a light bulb, or invisible waves, like radio waves, microwaves, x-rays and gamma rays.

Who wrote the first modern chemistry textbook?

Antoine Lavoisier (lah-vwah-ZHAY), 1743-1794, introduced quantitative measurement into the study of chemistry with his discovery of the law of conservation of mass. He discovered the role of oxygen in combustion and established the principles for naming chemicals. He wrote the first modern chemistry textbook in 1789.

What kind of shape is a star?

A regular star polygon (not to be confused with star-shaped polygon) is a regular non-convex polygon. Only the regular ones have been studied in any depth; star polygons in general appear not to have been formally defined.

Who is credited for creating the game of baseball?

You may have heard that a young man named Abner Doubleday invented the game known as baseball in Cooperstown, New York, during the summer of 1839. Doubleday then went on to become a Civil War hero, while baseball became America’s beloved national pastime.

What state capital has the smallest population?

As the capital of Vermont, Montpelier is the site of the Vermont State House, seat of the legislative branch of Vermont government. The population was 7,855 at the 2010 census. By population, it is the smallest state capital in the United States.

How many pandas are there in the United States?

There are 12 giant pandas in captivity in the United States, housed at the zoos in Atlanta, Memphis, San Diego and Washington. Zoo Atlanta and the San Diego Zoo have two cubs each. The youngest cub was born in San Diego in July.

Are pandas considered bears?

Scientists have used DNA to find out that the giant panda is more closely related to the other bears than to the raccoons. Giant pandas are in the family Ursidae with the seven other bear species. Raccoons are in the family Procyonidae, along with ring-tails and coatis.