The strength of prescription eyeglasses is measured in what unit?

More Questions:

What part of a piano's action permits the keys to be struck in quick repetition?

In France what is a Framboise?

What type of berry was once believed to cause birthmarks when eaten by pregnant women?

What Hebrew word means "so be it'

What European art museum has a glass pyramid in its courtyard?

Mt. Everest is located on the border of the Chinese region of Tibet and what other country?

Who directed the 1988 film "Mississippi Burning"?

Gene Kelly sings "Singin" in the Rain" over the end credits of what 1971 movie?

Who played the title role in the 1990’s sitcom "Caroline in the City"?

What artist performed the song titled "MMMBop"?

Who gave the "Cross of Gold" speech at the 1896 Democratic National Convention?

Approximately what percentage of the jellyfish's body is made up of water?

What is Beethoven's sixth symphony known as?

Which 1967 film earned Gene Hackman his first Oscar nomination?

Which band released the album "Fly Like an Eagle" in 1976?