my light unit

hello people, today I am going to be talking all about light.

natural and artificial, I hope you enjoy it.

Natural and artificial light

what are natural and artificial. it is when stuff makes light that is natural light, such as a firefly and the sun. and artificial light such as a candle and a light bulb. here is a picture

star photography

and now we are going to talk about nonluminous and luminous things. luminous means objects which emit light on their own. Examples: РSun, a flame of a burning candle. Non-luminous objects which cannot emit light on their own light. These objects reflect light from luminous bodies. Examples: РMoon, Earth.

The sun with a corona mass ejection

now on to reflection, Refraction happens when light changes direction, or bends when it moves from one material to another reflection means that if you look into a mirror you see yourself because the light bounces off of the mirror. After all, it is flat and smooth.

now we are going to talk about how light travels. light mostly travels in a strate line the reason that I said mostly is because it can bend if it goes through water.

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what is refraction change in direction of propagation of any wave as a result of its travelling at different speeds at different points along the wavefront.

since is going so well it is very fun so far I hope it can stay the same.