What substances glow in the dark?

Objects and substances that know themselves to glow in the dark, always surprise and attract attention. After all, this is so surprising that they do not need any external power source to be visible in the pitch darkness. Remember how looking in childhood on phosphoric clock, everyone dreamed of getting the same as a gift? Not necessarily phosphoric, of course, it is possible with another substance - the main thing is to glow. It is not even necessary that it was a clock - the main thing that this thing glows in itself every night. Now it will be easier for us to deal with what glowing substances and items worth carrying out to your home, and from which it is better to stay away: because we have prepared a whole list of substances and objects that are glowing in the dark. Some of them publish fluorescent glow themselves, others - under the influence of black lamps.

This is interesting: Black lamps are not at all lamps painted black, but a lamp that works in the long-wave part of the ultraviolet range. Our eyes are poorly perceived by electromagnetic waves of this range, so the light of the black lamp for us is almost invisible.

Radiy. This is a radioactive element, which as decay radiates the pale-blue glow. Radium was used to create luminous paints, which, as a rule, are green. Maria Curi is considered the radios-reflector. Initially, radium was considered a useful element, and was actively used in industrial production: added to paint and food. It remains only to sympathize with constant consumers of these goods: radium has tremendous toxicity and has properties to accumulate in the body, destroying bone tissue.

Plutonium. Not all radioactive elements are glowed by themselves. Plutonium, for example, makes a glow, only when interacts with oxygen in the air. It gives a dark red light similar to a burning area. The main use of plutonium found in nuclear weapons and as fuel at nuclear power plants. By the way, for all the time of testing nuclear bombs, about 5 tons of plutonium fell into the atmosphere, which gradually scattered around the world.

Phosphorus. Well-known phosphorus, like plutonium, reacts with oxygen and only after that gives a glow of terribly green light. Although phosphorus glows, it is not radioactive.

Radon. Pumping this gas into the room, you will not even see it. But it is only worth turning on the air conditioner to a minimum temperature and wait a bit like the air will start glowing. At first it will become yellow, and with even greater cooling - orange-red. But it is still better to observe this beauty, Radon is a radioactive gas, which, falling into the human body, contributes to the development of lung cancer.

Actinian. Actinium is an extremely rare element. According to a specialist, there are about 2600 tons of actinium in the crust of our planet. If you still manage to collect enough action, you can see the naked eye that in the dark it makes a gentle-blue glow.

Trithium. This radioactive element is a hydrogen isotope. Trithium can be found in clocks with illumination, weapons targeons, as well as an energy generator for autonomous sensors. Some firms even produce tritium key chains that are glowing in the dark. But there is a small trick - the tritium itself does not shine, but eats electrons that fall into a special substance whose atoms are started to glow during excitation. Such a substance is called phosphor. This principle works, for example, keychain in the picture below.

But how to deal with radioactivity? Is it really tritium key chains only suicides? Not at all - the energy of the electron released by the artifs is so small that it is without any problems delayed with a protective glass and a philophore for us.

Items and creatures.

Not only rarely encountered and inaccessible to ordinary person, but also quite ordinary things and creatures can be lit.

Mushrooms. To date, about 70 species of glowing mushrooms are known to science, but, for sure, there are still many unopened species in nature. Some of them glow barely noticeably, others are noticeable from several tens of meters. This is due to the bioluminescence - the abilities of living organisms glow with the help of inside chemical reactions.

Old stumps. It is not by chance that old stumps in this list are immediately after mushrooms, because it is mushrooms in their glow. Pulling stumps and rotels are an excellent home for many types of mushrooms, among which there is no no, and there will be glowing mushrooms. After a while they occupy the whole stump, creating a completely incredible illusion in the dark.

Lights. With a conventional no remarkable daytime, the bug with the onset of the night occurs amazing changes - the tip of his body suddenly begins to emit the green light, which is formed due to the oxidation of the luciferine substance.

Medusa. It would seem that in common between fireless and jellyfish? The first live on the surface in the grass, and the second inhabit the oceans at the depth of several kilometers under the monstrous pressure. It turns out that those and others know how to glow in the dark due to the same substance - luciferin.

This is interesting: many marine inhabitants possess the ability to glow. For example, plankton, which is going to huge luminous flocks. At night, such glowing clouds are visible even from space!

White paper. If you are completely desperate to find at least something luminous, you can open a writing table and take a simple sheet of paper from there. Do not try to consider it in the dark - you will not see anything. But in this case, a black lamp comes to help us. The composition of the white leaf includes bleaching agents, which, when exposed to ultraviolet, begin to glow bright blue.