I'm going to ask you simple question, does a window have a shadow? If light hits a window
does it cast a shadow? Those of you who have answered no, congratulations, you are the ones
who are correct, windows themselves do not cast Shadows. What does a window do then? Think of the
glass itself if you have a window in your room right now, (I hope you do) if you have a window in
your room right now check it out right. If it's night time I'm sorry I can't help you but check
it out for a second look at how the light just passes through nothing happens. That's because it
doesn't cast a shadow it's a pane that is meant to have light just come through it perfectly, but what
happens if you aim a flashlight out a window. Have you ever decided, okay what I'm going to do is I'm
going to take a flashlight and I'm going to aim it at this window, what happens? It reflects back
at you it is a reflective surface it is not one that will cause a shadow right? Not only will it
reflect but you will be able to see the light pass through because it is reflecting back at you and
allowing light to pass through. If a window does not cause a shadow it only reflects and allows
light to pass through it, why, in that case does a glass of water allow a shadow to occur? It's not
a flat surface the water also refracts light so it is both the light refraction and the fact that a
glass is a cylinder, it is not a flat pane, windows are specifically designed to make sure that there
is no shadow that passes through. Glass, if you look at a glass of water if you have a glass with you
a glass of water somewhere right you notice that cylindrical shape is kind of casting in on itself
where the edges of the glass get a little bit too thick for the light to pass through that's
where the edges of the Shadow will begin. Here's a beautiful thing about art, is that ART IS SCIENCE...
Unfortunately, so if you know enough about science you know enough about art. Colored glass, the shadow
is just going to be colored. If you've ever worn sunglasses, right, there's a bit of color on the
lens that makes the light not pass through as well. If you've ever worn colored lenses before
I own a pair of like red sunglasses your eyes are capturing light it's like bouncing off of stuff
and hitting your eyes the light is being disrupted by that little piece of colored
glass in front of you so everything is perceived as that color. Ao the same thing is happening light
is going through that colored glass and the shadow that is creating that it is creating
is perceived as a different color.
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So if we have a glass, right, when we have have our light source here think of
it as if this light is hitting the glass like this, right here, is where our Edge gets thickest where
the glass is the most "stacked up" on each other if that's our light source so what we
want is that these edges will show the most when it comes to the shadow itself, we'll have a little
bit of that on the edges and it'll get clearer as we get closer to the center because we have a
far flatter plane that the light has the ability to go through. If we kind of shade so it is the
outside of this that is causing the most Shadow and it is the inside that gets the least
you've approximately done it right, just about, you can also have a little bit because the edge
of a glass is usually a little bit harsher you can also maybe make it a little bit darker there's a
little bit more intensity down here think of just how much glass is being stacked up on itself how
many more layers of glass does the light have to get through and if it's more and or less and then
there's more or less that you have to get through. So if we have the glass here light source here so
there's a darker Shadow because of the more layers of glass
(Livestream Commenter: "so do clouds look like they're lit up because the light is bouncing off of water vapor?")
No... it's because it's edge lighting, edge lighting
just happens to everything. You could also say that though, I guess you could say that it's
because there like little particles that are like reflecting the Sun but if you're talking about
when it looks like it's like lit up from behind it that happens to every object it's just because the
light is reflecting off of them from behind in a more intense way. Shading through transparencies so
this I I kind of just talked about like windows and glasses and stuff like that all you really
need to worry about now is just the shape of the transparent thing itself right references are your
best friend as well glasses do the same thing if you're looking at a pair of glasses because it's
convex or concave right your little, there's another word for it whatever those lenses are
called depending on where if you need to see farther or closer they kind of refract light funkier (translator note: bi-convex/bifocal lens?)
Uh, that's what causes a little Sunbeam that one's a little bit tougher, I'm not going
to try and explain that one cuz I don't really understand it that well it's just like that's
what you can that's what you can use if you were a not great kid on the playground and you decided
to try and like burn things in the playground but you just need to think about the shape of whatever
glass thing it is and if it has color on it think of if you're looking through a stain of glass
window and it paints that shape of the stained glass window on the ground same exact deal it's
just going to cast the shadow color it's going to cast the glass color on the ground as well
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