Candles have remained largely unchanged through the ages, despite the fact that they’re one of the oldest sources of light. In essence, it consists of wax or another fuel encased in a wick. The fire then melts the wax into a substance which is able to produce light. Illumination and heating are sometimes performed with them. Early candles were likely made from whale fat in China during the Qin Dynasty, about 200 years ago. Approximately the same time in India, they were made from cinnamon wax. Then, many different types of fuel and materials for wicks are tried. Beeswax is a common material for creating fuel. China used it up until the discovery of synthetic materials around 40BC. A wick made of rice paper filled the molds of those from 40 BC China. An interesting variation of the candle dates back to the 1st century and is made from a type of fish called eulachon, which is also known as the “candlefish”. In spawning, the body fat of a spawning lily is so high that if caught and dried, it can be lit like a candle. Late in the Roman period, nomadic tribes in Europe made their first candles. It was not possible for the Romans to use olive oil (that the Romans used for lamps) in the northern regions of Europe, so they made candles out of tallow or animal fat. Due to the collapse of the Roman Empire, olive oil supply decreased in regions under it, so tallow candles were produced all over Western Europe.