In some ways light act like waves, in others like particles.
All light waves behave in two ways, simultaneously. Light of any kind acts as both a wave and a ray.
Two of the things that can bend light waves are gravity and any type of refractive medium. For refractive mediums, the light travels from a less dense medium (like air) into a denser one (like water) such that its speed changes. Different substances have different indices of refraction. Bending of light by gravity is detectable on enormous areas like in space (eclipses, black holes, etc.)
Light
A good model has two characteristics: Accuracy - the model acts like the reality it is trying to describe Strength - the model can tell you things you did not know before (what if?)
When a ray of light hits a surface, two things can happen: reflection, where the light bounces back off the surface, and refraction, where the light enters the material and changes direction.
Light and warmth.
Sometimes, water can act as a mirror. The light that the sun gives off has bounced off of you into the water. When the light reaches the surface of the water, it can do two things. Firstly, it can be refracted underneath the surface. Secondly, it can be reflected back at you and into your eye. Usually, both occurs, although whether enough reflection occurs to make you see your reflection or not depends on several factors. Your eye does something similar. It picks up the light from the sun that has bounced off of objects and creates a picture out of it. While the water acts like a mirror and your eye acts like a lens, the concept is very similar.
lightbulbs and the sun
Luminous objects are things that generate their own light such as The Sun and Fireflies. Illuminated objects are things that reflect light that has come from another source, things like The Moon or anything in your room when you switch on your light.
Try little things at first, like a flirtatious laugh or a light touch on his hand. It's best not to rush these things.
a convex lens is thicker in the center then at the edges. A convex lens acts like a concave mirror, because it focuses rays of light.
Two things the Sun provides is heat and light.