What is One CANDELA (Luminous intensity) - Knowit?

A candela is like the brightness of a single candle, it tells us how strong the light is from a source in one direction.

Imagine you're sitting in a dark room and someone lights a small candle near you. That warm, soft glow is coming from the luminous intensity, which is measured in candelas. One candela is just like that single candle, it’s not super bright, but it's enough to help you see.

Think of a flashlight. If it shines with the brightness of one candela, it's as if you're holding a small candle in front of your face. But if you have a bigger light source, like a lamp or a bright bulb, that’s much more than one candela, maybe even hundreds or thousands!

So when scientists talk about how strong a light is from a certain direction, they use the candela to describe it. It's not magic, just a way to measure brightness, like counting how many candles are shining in your direction! A candela is like the brightness of a single candle, it tells us how strong the light is from a source in one direction.

Imagine you're sitting in a dark room and someone lights a small candle near you. That warm, soft glow is coming from the luminous intensity, which is measured in candelas. One candela is just like that single candle, it’s not super bright, but it's enough to help you see.