when was the abacus invented in ancient china

When was the abacus invented in ancient china series#

On July 2, 1776, two days before the Declaration of Independence was signed, he wrote this letter to his wife: If you've ever wondered why we celebrate Independence Day with these colorful explosions, you can thank the British - and John Adams. When English royals weren't competing with Europe for the best fireworks display (King James II's firemaster was actually awarded knighthood for his impressive work), they were introducing fireworks to their thirteen colonies across the Atlantic. Being a green man, however, was a highly dangerous position, and many were injured or killed when their fireworks malfunctioned.Ī hand-color etching of fireworks over the River Thames in 1797, artist unknownġ600 - present: Enter Color! Modern Fireworks and the Fourth of July Before the show, the green men, named for the leaves they wore to protect themselves from sparks, would tell jokes to the crowd while they prepared the celebration. If you attended a fireworks show in 1600, the science would not have been much different from ancient China, but it was a lot more entertaining! Now used for military victories, religious events, or royal celebrations, aerial fireworks (still plain orange - no color yet!) were run by 'firemasters' and their assistants, 'green men'. Like their Chinese counterparts, Western engineers also developed weapons - this time, muskets and cannons - but continued to develop fireworks, and they became larger and more elaborate. Gunpowder traveled west when European and Arabian diplomats and missionaries began visiting China around this time. Off the battle field, however, this technology led to something beautiful: the first aerial fireworks.

By 1200, China had built the first rocket cannons, using gunpowder to aim and blast projectiles at their enemies. Unsurprisingly, it wasn't long before the military adopted gunpowder. The chemistry was an accidental discovery, and there was still a long way to go.ġ200 - 1600 AD: War Technology Goes West

When was the abacus invented in ancient china series#

There were no added colors, so a 'fireworks show' was just a series of small, noisy explosions. Paper fireworks were used to scare evil spirits or to celebrate weddings and births and were simply thrown onto a fire, not blasted into the air. If you attended a fireworks show in 800 AD, it would be unlike anything we see today. Instead, the mixture caught on fire, and gunpowder was born! When the powder was packed into bamboo or paper tubes and lit on fire, history had its first fireworks! As the story goes, around 800 AD, an alchemist mixed sulfur, charcoal, and potassium nitrate (a food preservative) hoping to find the secret to eternal life. Around 200 BC, the Chinese unintentionally invented firecrackers by tossing bamboo into fire, but it took another thousand years before true fireworks came alive. Like many inventions, firecrackers fireworks were created by accident. There were no elaborate sparkles, no red, white, and blue stars - nothing more than a few glorified (although uplifting) explosions in the sky.Īs it turns out, although we've been lighting fireworks for the last 2000 years or so, modern fireworks were only invented in the 1830s - so, what were they like before then? When Henry VII had fireworks at his wedding in 1486, how did they look? How have fireworks and the science behind them evolved throughout history?Ģ014 fireworks over Port Austin, Michigan On America's first Fourth of July celebration in 1777, fireworks were one color: orange.