Thames & Kosmos Wow in the World: Everlasting Volcano handleiding
Handleiding
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Liquid crystals
As the name suggests, liquid crystals are
materials that are in a state
betwn a liquid and
a crystal solid.
When the crystals are
cler,
they are
further apart
and they reect light in
one color. When the crystals are
warmer,
they
move closer together
and they reect light
differently, thus appearing as a different color.
“Orange
you glad
it’s lava?”
3
#
COLOR-CHANGING COLOR-CHANGING
SLIMESLIME
The slime in this kit is thermochromic
which means
it changes color
due to a change in temperature.
A
thermochromic material changes
color because when it is heated,
its
molecules absorb and reflect
light in new ways.
This process is
reversible because it does not
involve a change in the structure of
the molecules in the material. This
type of change is called a physical
change. There are two common
groups of thermochromic materials:
liquid crystals and leuco dyes.
WHITE
LIGHT
WHITE
LIGHT
RED
LIGHT
ORANGE
LIGHT
CLER
Liquid crystal surface
WARMER
Leuco dyes
Leuco dyes are chemicals that
can
switch betwn two dierent
forms,
one of which is
colorle,
depending on exposure to
light, heat,
or pH.
These dyes can be mixed with
other pigments to show one color
when they are warmer and another
color when they are cooler. The slime
in this kit contains a leuco dye, as do
color-changing
plastic spns.
A classic example of a thermochromic liquid
crystal is a
md ring,
which changes color in
response to the wearer’s body heat. Another
common use for liquid crystals is in
liquid
crystal displays (LCDs),
which are used in TVs
and computer monitors.
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Productinformatie
| Merk | Thames & Kosmos |
| Model | Wow in the World: Everlasting Volcano |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 5654 MB |
