The luminescence that clothed Norhala brightened, deepening the darkness.
The yellow luminescence streamed through a slit not more than a foot wide in the wall.
We are, perhaps, still ill informed as to the phenomena of luminescence in which undulations are produced in a complex manner, as in the case of a stick of moist phosphorus which is luminescent in the dark, or in that of a fluorescent screen.
Professor Pringsheim has succeeded, in certain cases, in finding the dividing line between the phenomena of luminescenceand that of incandescence.
The X rays falling on matter are thus subjected to transformations which may be compared to those which the phenomena of luminescence produce on the ultra-violet rays.
On incandescence, luminescence is superposed; and the advantage which might have been expected from the simplicity of the medium vanishes through the complication of the circumstances in which the phenomenon is produced.
The soft luminescencefrom the Destiny's nuclear engines crept forward and caressed him.
He guessed he was near the engine compartment and vaguely sensed that the luminescence had something to do with the nuclear engines that Mecteacher told him moved the ship.
The luminosity of various salts in the Bunsen-flame is due to so-called luminescence and there are many other examples of light-production which are included in the same general class.
Every gas when excited to luminescenceby an electric discharge in the "vacuum" tube (containing the gas at a low pressure) emits light of a characteristic quality or color.
Then, swiftly as it had come, it was gone, and only a small globe of white luminescence floated above the great hulking machine.
From the floating machine there broke a stream of brilliant light that floated like some cloud of luminescence down a straight channel.
Physics) Defn: Luminescence exhibited by a substance on being moderately heated.
Physics) Defn: Capable of luminescence under the action of cathode rays, X rays, or any of the allied forms of radiation.
If we assume that luminescence is dependent on reaction velocity, the intensity of luminescence should increase with increasing temperature.
After all, unless luminescenceis connected with respiration, we should hardly expect CO{2} to be produced.
These appear to be under nervous control, as a strong stimulation in one part of the body causes luminescence which spreads over the whole surface of the worm.
The figures given for intensity of animal luminescence must, therefore, be accepted with a realization of the difficulties of measurement.
By bringing the solutions of luciferin and luciferase to the same temperature and then mixing them one can measure any increase or decrease of temperature which occurs during the luminescence which results from mixing.
He based his conclusions largely on the effects of temperature and concentration of reacting substances and went so far as to declare that any reaction would produce luminescence if the reaction velocity were sufficiently increased.
Concentrated luciferase and concentrated luciferin give a brilliant light which lasts for an intermediate length of time and weak luciferin and weak luciferase give a faint luminescence which lasts for an intermediate length of time.
More complete works on light and luminescencecome first and original articles follow.
I believe, however, that in Cypridina also, the luminescence intensity depends not only on reaction velocity but on the particular manner in which luciferin is oxidized.
Many animals with intracellularluminescence have quite complicated luminous organs.
From Table 10 it should be noted that the intensity of luminescence of pyrogallol oxidized with most oxidizers is actually less at the boiling point, a fact which I have repeatedly verified.
Almost on the horizon, you could see the faint luminescence of it upon the smooth sea.
As the luminescence moved, there moved above it, still and serene always, seven tiny globes of seven colors, like seven little moons.
And theluminescence I had seen rising from its depths was larger, nearer!
The interesting problem of luminescence will be discussed elsewhere.
In adaptation to the darkness, in which there is only luminescence that eyes could use, there is a great development of tactility.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "luminescence" in a variety of sentences. We hope that you will now be able to make sentences using this word.
