Sentences with phrase «higher energy radiation such»

They can also be used for biological labeling because of their low toxicity, chemical stability, and intense luminescence when excited by near - IR radiation, which can penetrate tissue much better than higher energy radiation such as ultraviolet, as is often required with quantum dot labels.

Not exact matches

Researchers at the Max Planck Institute for Physics in Munich and the University of Geneva have now succeeded in localizing the origin of the high - energy gamma radiation in such a jet: it apparently originates very close to the black hole.

On the other hand, ionizing radiation such as x-rays and the used in CT scans or gamma - ray Mammograms do have enough power to change matter, because the wavelength is low and of high energy.

Eventually, individual atoms begin colliding with each other at high speeds — having such random motion is precisely what it means to be hot, and these violent collisions convert motion energy into radiation.

This Čerenkov radiation was detected by imaging atmospheric Čerenkov telescopes (IACTs), such as HESS (High Energy Stereoscopic System) in Namibia, MAGIC (Major Atmospheric Gamma Imaging Čerenkov) in the Canary Islands, and VERITAS (Very Energetic Radiation Imaging Telescope Array Systems) in Arizona.

radiology The science dealing with X-rays and other high - energy radiation, especially the use of such radiation for the diagnosis and treatment of disease.

Such a telescope would use large arrays of ground - based telescopes to detect blue flashes of Cerenkov radiation, which are caused by very high energy gamma - ray photons from cosmic sources smashing into the atmosphere.

synchrotron radiation The term given to the high - energy radiation emitted as charged particles, such as electrons, accelerate to nearly the speed of light while traveling in a curved path.

But pulsars emit gamma rays, and scientists such as KIPAC's Roger Romani can study these to measure their rotation and understand how high - energy radiation is generated in their intense magnetic fields.

When temperatures rise there may be more water vapor evaporated into the Atmosphere and that may result in more clouds and, if clouds have a net cooling effect (as I think they do) that may reduce the rate of incoming shortwave radiation and thus reduce incoming energy rates such that the temperatures will not rise as high.

It might help you if you had a few concepds in mind too when considering this subject, like «space» is the big energy «sink» with old sol (and the internal heat generating processes (including nuclear) of the earth) as sources... any mechanism that results in a delay of energy leaving earth, such as a «bounce - back» or a re-rad of energy (like back radiation) certainly is going to increase the «energy flux» in the system, and this in any way you want to frame the argument translates to a «higher» energy state, and a higher so - called temperature» (movement in matter, velocity of air molecules or oscillations in certain «resonant molecules) as well.

If a second blackbody object (no internal thermal energy source but with thermal conduction properties such that independent of the direction of incident radiation on the second object, the second object's surface temperature will be everywhere the same) is placed next to but NOT touching the original object, when the two - object system reaches steady state (i.e., for each object, the rate of energy leaving the object will equal the rate of energy entering the object), the surface temperature of the original object in the presence of the second object will be higher than it was in the absence of the second object.

It certainly doesn't apply to a slab of pure silicon, which readily absorbs radiation, of higher frequency than the band gap energy; but it can not then re-emit those same energies, because silicon is an indirect gap semiconductor, and the minimum energy gap does not occur at the same momentum state, so such transitions are generally prohibited.