Yeeeee (camara flash)
Joseph   Are amazing   Man Conner Coat.
science was visiting the LA children
museum and having my shadow captured on
the wall so as a tribute to that moment
i'm going to show you how to build your
own shower wall and then we're going to
talk about the science behind what makes
up actually glow and then we take it to
the next level with the ridiculously
talented artist buddy of mine but first
i wanted to see if kids said that you
think these four walls are as cool as I
once did so we invited some family
friends over for a party
Chris
you
you
when the dads came in the results were
as expected
you
Oh
Sears how you make it for projecting the
light standard camera flash works great
the higher the LA to the bed or you
could sort of paint it with like UV
flashlights or this blue laser a red
laser doesn't work Anna normal
flashlight doesn't work as well either
and will there quiet a second for the
wall I only were two options easy to use
glow-in-the-dark paint or I found a
place online that sells rules of
glow-in-the-dark vinyl sheets you can
put it directly on the wall ribosome
half inch ear off just to make it pork
and depending on how much is the wall
you want to cover probably cost you
somewhere between 50 it may be 200 bucks
I put all the links in the description
with even more details so I asked my
super talented friend Jason balding to
come over and see what he could do with
the global but before we get to that
let's quickly thought about the science
behind why sub close our eyes can
actually see electromagnetic waves from
400 to 700 nanometers in length and our
brain distinguishes them as colors so
400 is ooh and then up to 700 a meters
is red as soon as a wavelength gets
asked this band we can't see it anymore
and on the short-wavelength side we have
ultraviolet or UV and on the longer
wavelengths side we have infrared or IR
they can keep going on the shorter
wavelength side eventually you get
things like x-rays you keep going on a
long wavelength side eventually
like Wi-Fi and even radio waves which
could be the length of entire cities
when you look at fluorescent colors
something special is happening electrons
and fluorescent materials get excited to
a higher energy state by ultraviolet
light that we can't see and then when
they return to their low energy state
they have a visible light that we can
see this is why they seem to glow in the
Sun or under a blacklight invisible UV
light comes in and then visible light
comes out which is why they seem
brighter more light is actually hitting
your eyes that if they weren't floor apt
glow in the dark stuff is just a special
case of fluorescence called
phosphorescence the only difference is
that instead of electrons can be excited
and then releasing that energy right
away phosphorescent materials have
electrons that get excited but then we
get trapped in this high energy state
and it takes them a while I release the
energy and get back to their original
state and he'll get back the same total
light it's just over a long period of
time which is why they glow dip okay
nowadays
we also found that if you displayed an
image with a projector you could burn
that image into the wall and if you just
let it on your phone you can sort of
make a light stand
a few months back I made a video about
the scale of the solar system using just
a drone and then just junk you find
lying around your house for scale and
you might have noticed that I didn't
include poor Pluto but I did include a
new ninth planet that has been
discovered with math that is ten times
more massive than Earth and it's super
far away so the guy who was responsible
for getting Pluto kicked out also
happens to be the same dude who
discovered this new ninth planet a few
years later his name is Mike Brown and
he is a Caltech astronomer and he also
happens to be super brilliant and really
funny he wrote a book called how I
killed Pluto and Wyatt had it coming and
it's the best book I've read in the past
three years and I power through two
three books a month and I know a book
about astronomy seems kind of lame but
trust me on this it's just one of those
that changes the way you think about
things and see the nice guy so the good
folks inaudible who are kind enough to
support this channel have made it so
that if you want to listen to Mike's
book or any other book for free all you
have to do is use the link of the
description or go to audible.com slash
mark Rover thanks for watching
Oh
that's just
yes
Oh
