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A simplified Jablonski diagram illustrating the change of energy levels.. The principle behind fluorescence is that the fluorescent moiety contains electrons which can absorb a photon and briefly enter an excited state before either dispersing the energy non-radiatively or emitting it as a photon, but with a lower energy, i.e., at a longer wavelength (wavelength and energy are inversely ...
Today, owing to technological convergence, the word "fluoroscopy" is widely understood to be a hypernym of all the earlier names for moving pictures taken with X-rays, both live and recorded. Also owing to technological convergence, radiography, CT, and fluoroscopy are now all digital imaging modes using X-rays with image-analysis software and ...
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These creatures are "incredible opportunists," not unlike raccoons, coyotes, spotted hyenas and even humans, who employ similar strategies to help them change and adapt to an ever-changing ...
Some viral videos involved more than one animal, like one the USA TODAY Network obtained in June showing a fearless bear fighting off two alligators in a Florida river.
A male humpback whale made one of the longest and most unusual migrations on record for the species, an anomaly scientists say might be linked to climate change.
The second setup, much more like a clinical CT scanner, is gantry based where the animal/specimen is stationary in space while the X-ray tube and detector rotate around. These scanners are typically used for small animals ( in vivo scanners), biomedical samples, foods, microfossils, and other studies for which minute detail is desired.
Watch the video below to see an enthusiastic soccer-playing elk. A California bear with a hankering for healthy snacks pulled off a daring heist at a La Cañada Flintridge family's garage.