How does glow in the dark paint work
To answer your question, we need to discuss light. This just isn’t an easy thing to do. About a hundred years ago, the world’s smartest scientists even argued about what light really is. And so they argued for a lot of years.
Light is definitely a bunch of tiny things that scientists call “photons”. These little things can travel unbelievably quickly.
How rapidly? Well, imagine this: photons can go across the entire world more than seven times in just one second.
When these photons attain our eyes, we see them as light. The more photons there are, the brighter the light.
Photons can are available all the colours of the rainbow. In addition they hold energy which can turn into heat. This is why it feels warm when the sun shines.
But, not all light is the same. Blue and violet photons each have more energy than red ones, for example.
Now here’s a weird thing: there are some types of light which might be invisible!
For instance, ultraviolet (UV) light, which has even more energy than blue and violet light, is invisible.
Sunlight contains a few of this highly effective UV light. Because it has a lot energy, it may well cause a number of damage, like sunburn, in case you get an excessive amount of of it in your skin.
Another invisible type of light is infrared light. Infrared means “less than red”, so this light has even less energy than red light.
Making paint glow
Many light sources, just like the Sun or an old light bulb in your lavatory, glow because they’re really hot. Normal glowing, like that of the Sun and a light bulb, requires objects to be really hot for us to see it.
As you already know, you possibly can see glow-in-the-dark paint, however if you contact it, it’s just as cold as the bedroom wall. So, the glowing of the paint should be totally different to the glowing of a light bulb.
The paint has a particular kind of glowing called “luminescence” and it might solely be created from a couple of types of material. One such material is what scientists call “luminescent phosphors”, and this is what makes your paint glow. Scientists make luminescent phosphors within the lab by mixing particular chemical compounds collectively, and then add them to the paint. The paint is then sold to factories and colour run powder manufacturers who put it on toys, stickers, and even inside colouring pens.
While some things glow all the time, just like the sun, glow-in-the-dark paint should be “told to glow”. Just like your mother and father have to cost their phones each evening to make them work, these supplies need to be “charged” earlier than they start glowing.
In fact, the charging of your glow-in-the-darkish paint is finished by other types of light. The invisible UV light with numerous energy can charge the particular phosphors in your paint and make it glow in your bedroom at night.
There are completely different types of glow-in-the-darkish paint. One type could be charged during the day and may glow for hours at the hours of darkness at night. The charging that happens in the course of the day, for example by sunlight, is stored within the paint for some time, just like in the battery of a phone.
This type of paint is called phosphorescent. The other type, called fluorescent paint, only glows while an invisible UV light is turned on to charge it.