When was the world discovered to be round?

When was the world discovered to be round?

After the Greek philosophers Pythagoras, in the 6th century BC, and Parmenides, in the 5th, recognized that the Earth is spherical, the spherical view spread rapidly in the Greek world. Around 330 BC, Aristotle maintained on the basis of physical theory and observational evidence that the Earth was spherical.

What makes salmon meat pink?

The actual color of salmon flesh varies from almost white to deep pink, depending on their levels of the carotenoid astaxanthin due to how rich a diet of krill and shrimp the fish feeds on; salmon raised on fish farms are given artificial coloring in their food.

What makes French vanilla different from regular vanilla?

The term French vanilla is often used to designate preparations with a strong vanilla aroma, containing vanilla grains and sometimes also containing eggs (especially egg yolks). The appellation originates from the French style of making vanilla ice cream with a custard base, using vanilla pods, cream, and egg yolks.

How many cups is 200 grams of flour?

The most common dry ingredients are flour (1 cup = 150g), sugar (1 cup = 200g), brown sugar (1 cup packed = 200g), rice (1 cup = 200g), raisins (1 cup = 140g). For butter 1 tablespoon is 15g, 1 stick is 110g and 1 cup is 225g. Confectioner’s sugar is icing sugar (1 cup = 100g).

Which bird produces milk?

The pigeon is one of only three bird species (the others being flamingos and male emperor penguins) known to produce ‘milk’ to feed their young. In pigeons the milk starts to be produced in the crop of the parent birds two days before eggs hatch.

How much energy is generated from recycling a glass jar?

Recycling one glass jar saves enough energy to operate a television for three hours.

Which capital city lies on the Potomac River?

George Washington, the first President of the United States, was born in, surveyed, and spent most of his life within the Potomac basin. All of Washington, D.C., the nation’s capital city, also lies within the watershed.

How fast is Mach 1 at sea level?

At Standard Sea Level conditions (corresponding to a temperature of 15 degrees Celsius), the speed of sound is 340.3 m/s (1225 km/h, or 761.2 mph, or 661.5 knots, or 1116 ft/s) in the Earth’s atmosphere.