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They disperse.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoThey could have radium in it.
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Are glow in the dark objects luminous or illuminated?
Luminous.
Why are you able to see objects that are luminous?
They glow in the dark because luminous things have a quality that makes them glow. For instance, a firefly is luminous.
Is a glow in the dark ball luminous or illuminated?
It is a source of light, hence luminous.
What is luminous color?
Luminous colours are bright and kind of glow in the dark like a hivise and these are the luminous colours: luminous pink Green Yellow Blue Orange
Is a dark night luminous?
A dark night can be considered luminous. Especially in the eyes of a poet or sensitive individual. The night can glow or radiate a particular type of brightness.
Why do luminous object glow in the dark only?
They glow even during day but the intensity of its light is negligibly small compared to that of sun.So it appears that it does not glow
What non luminous objects can be seen in the dark?
please help me on this one
Used for years in self luminous paint for glow-in-the-dark clock faces?
radium was used in luminous paint and for theglow in the dark clock it as it emits radioactive decay that's why its not used in luminous paint now
Are satellites luminous or non-luminous?
Non-luminous. Objects which produce light of their own or give out or emit their own light are called luminous objects. Objects which do not produce light of their own, on the other hand, are called non-luminous objects. Luminous objects are objects like stars, sun and other celestial bodies which give out their own light. Objects surrounding us are not such light emitting objects. Therefore, we are surrounded by non-luminous objects.
Is a glow worm luminous?
Here is a very singular thing: the Glow-worm's eggs are luminous even when still contained in the mother's womb.
What are luminous and non luminous materials?
Luminous means "giving off light", or glows in the dark (since luminosity is detected by the eyes, it usually refers to the visible part of the electromagnetic spectrum). Many materials emit a wide range of radiation other than visible light, which is why some radioactive materials were used as glow in the dark paints, and why the Curies focused on a particular radioactive isotope (because it glowed in the dark). Some materials can even store energy from visible light and emit it later, which is why some of my luminous objects have to be "charged" by a light bulb or the sun. Some chemical combinations can emit light for a while, such as the stuff in lightning bugs, which we can replicate in production lines to make glow sticks. Non luminous materials do not emit light that we can see. Most elements that are not radioactive fall into this category.
Why and how are various celestial objects luminous and non luminous?
Luminous objects are those which can produce or give out light of their own, while non-luminous objects cannot produce or give out their own light. Some examples of luminous objects would be the sun, stars, fireflies, glowworms and some deep sea fish Some examples of non-luminous objects would be the planets Mercury, Venus, Earth, Mars,Jupiter, Saturn, Uranus, Neptune and also Moons.
