What year was the first DVD released?

What year was the first DVD released?

DVD’s first year. On March 31, 1997, digital video disc (DVD) video players were first released for sale in the United States. Rather than marking the end of DVD’s early troubles, however, it was only the start for new ones.

What causes the color of the red sea?

Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.

Which animal sleeps about 20 hours a day?

The sleepiest animal in the world is the koala, who sleeps 22 hours a day. Next is the sloth (20 hours), armadillo and opossum (tied at 19 hours each), lemur (16 hours), then hamster and squirrel (tied at 14 hours each).

What are the only two mammals that lay eggs?

Only two kinds of egg-laying mammals are left on the planet today—the duck-billed platypus and the echidna, or spiny anteater. These odd “monotremes” once dominated Australia, until their pouch-bearing cousins, the marsupials, invaded the land down under 71 million to 54 million years ago and swept them away.

What was Power Rangers based on?

The series that began the franchise, Mighty Morphin Power Rangers (an American adaptation of the 1992 Japanese Super Sentai Series, Kyōryū Sentai Zyuranger), began broadcasting as part of the Fox Kids block of programing that aired on the Fox network. It lasted for three seasons (from 1993 to 1996).

Why does an ear of corn have an even number of rows?

An ear of corn always has an even number of rows because of the genetic formula which divides the cell.

How much does the temperature change with altitude?

Although the actual atmospheric lapse rate varies, under normal atmospheric conditions the average atmospheric lapse rate results in a temperature decrease of 6.4C°/km (3.5F°/1,000 ft) of altitude above ground level. The measurable lapse rate is affected by the moisture content of the air (humidity).

What causes a jet stream from a plane?

These trails are actually called contrails, short for “condensation trails”. They are not smoke from the engines, they are formed when the water in jet exhaust (and there’s quite a lot of it, like car exhaust on a cold day) mixes with wet cold air, and condenses and freezes into ice crystals.