When were crayons invented?

When were crayons invented?

The Invention of Crayola Crayons. In 1903, cousins Edwin Binney and Harold Smith invented something that has remained popular to even this day. This coloring stick was made for children and named crayons. Crayon is a French word that means pencils.

Is Blue the hottest flame color?

Color tells us about the temperature of a candle flame. The inner core of the candle flame is light blue, with a temperature of around 1670 K (1400 °C). That is the hottest part of the flame. The color inside the flame becomes yellow, orange, and finally red.

Why are the atomic masses listed on the periodic table not whole numbers?

The atomic mass reported on a periodic table is the weighted average of all the naturally occuring isotopes. Being an average it would be most unlikely to be a whole number. The mass of an individual atom in atomic mass units is the mass relative to carbon-12.

How many half steps are in an octave?

Octaves can be perfect, augmented or diminished. Below you can see that the number of steps determines the quality of the interval: Perfect octave, 6 whole steps or 12 half steps: Augmented octave, 6 1/2 whole steps or 13 half steps

How many electoral votes must a candidate win in order to win the presidency?

In order to become president, a candidate must win more than half of the votes in the Electoral College (currently that would be 270 of the 538 total electors).

How many columns are in the Lincoln Memorial?

New York architect Henry Bacon modeled the memorial in the style of a Greek temple. The classic design features 36 Doric columns outside, symbolizing the states in the Union at Lincoln’s death. The building measures 204 feet long, 134 feet wide, and 99 feet tall, with 44-foot columns.

What did the medici family rule?

By 1434, Cosimo de Medici had consolidated power for himself and his family in Florence, all the while maintaining the appearance of democratic government. Cosimo clung to his position as a private citizen, but it was clear to all that he ruled the city of Florence from behind the scenes.

Which is the only continent without glaciers?

Glaciers are present on every continent and approximately fifty countries, excluding those (Australia, South Africa) that have glaciers only on distant subantarctic island territories. Extensive glaciers are found in Antarctica, Chile, Canada, Alaska, Greenland and Iceland.