When viewing biological samples with a microscope, the light beam is disturbed if the lens of the objective is in a different medium than the sample. For example, when looking at a watery sample with a lens surrounded by ...
Optics & Photonics
4 hours ago
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72
Lost your keys? Can't remember where you parked the car? If only you had the memory of a mountain chickadee.
Plants & Animals
Apr 17, 2024
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The loss of biodiversity poses a challenge for nature and humans alike. A study led by Ulm University shows that a decline in biodiversity promotes the spread of potentially zoonotic pathogens.
Ecology
Apr 17, 2024
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Joaquim Goes, an ocean biochemist at Columbia Climate School's Lamont-Doherty Earth Observatory, had to look twice when he first saw the tiny strands of fiber floating in a water sample from the Hudson River. An expert in ...
Environment
Apr 17, 2024
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2
When you see an advertisement for a detergent promising to brighten your clothes, something called a fluorescent whitening compound, or optical brightener, is probably involved. Such material absorbs UV light and emits visible ...
Earth Sciences
Apr 17, 2024
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