Tag: science & technology

Citric acid (C6H8O7) is a naturally occurring organic acid found abundantly in citrus fruits like lemons, oranges, limes, and grapefruit, giving them their characteristic sour taste. Sulphuric acid is a strong mineral acid, acetic acid is found in vinegar, and amino acids are protein building blocks.

Earth is the only planet not named after a Roman or Greek god. Jupiter (king of gods), Mars (war god), and Venus (love goddess) were all Roman deities. Earth's name comes from Old English/Germanic words meaning ground.

Dogs are banned as pets in Iceland, with exceptions for working dogs like sheepdogs. The ban dates to 1924 due to concerns about hygiene and echinococcosis. Cats, cows, and horses are legal.

The thigh bone (femur) is stronger than concrete pound-for-pound due to its dense cortical bone structure. It can withstand considerable pressure. Teeth are not bones (enamel/dentin), and while the skull is tough, it's not comparable to femur strength.

Without caramel coloring, Coca-Cola would be green due to the combination of ingredients. The original formula's acids and other ingredients naturally produce a greenish-brown color. Caramel E150d is added to give the familiar dark brown appearance.

According to the Oxford English Dictionary, 'set' has the highest number of distinct definitions (over 430). This is because 'set' functions as a verb, noun, and adjective with multiple meanings in different contexts. 'Run' and 'go' also have many definitions.

Fingernails grow approximately 4 times faster than toenails. The average growth rate is about 3.5 mm per month for fingernails versus 1.5 mm for toenails. This difference is due to better blood circulation and trauma exposure in hands.