To reply your question, we have to speak about light. This shouldn’t be an easy thing to do. About 100 years ago, the world’s smartest scientists even argued about what light really is. They usually 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 quickly? Well, imagine this: photons can go around the entire world more than seven occasions 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. Additionally 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 can be invisible!
For example, ultraviolet (UV) light, which has even more energy than blue and violet light, is invisible.
Sunlight contains some of this powerful UV light. Because it has so much energy, it might cause a number of damage, like sunburn, in case you get too much 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, like the Sun or an old light bulb in your rest room, glow because they are really hot. Regular glowing, like that of the Sun and a light bulb, requires objects to be really scorching for us to see it.
As you already know, you may see glow-in-the-darkish paint, but should you contact it, it’s just as cold as the bedroom wall. So, the glowing of the paint must be completely different to the glowing of a light bulb.
The paint has a particular kind of glowing called “luminescence” and it could solely be created from a number of types of material. One such materials 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 together, and gender reveal confetti then add them to the paint. The paint is then sold to factories and producers who put it on toys, stickers, and even inside colouring pens.
While some things glow all the time, like the sun, glow-in-the-dark paint should be “told to glow”. Just like your mother and father have to charge their phones every night to make them work, these supplies need to be “charged” earlier than they start glowing.
In reality, the charging of your glow-in-the-dark paint is completed by other types of light. The invisible UV light with a number of energy can cost the special phosphors in your paint and make it glow in your bedroom at night.
There are different types of glow-in-the-dark paint. One type may be charged throughout the day and may glow for hours at nighttime at night. The charging that occurs through the day, for instance by sunlight, is stored within the paint for a while, 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 cost it.