Light bulbs are a big upgrade from fires and candles. Every year, homes in informal settlements burn down in Africa because of fires used for heating and lighting. So electrical light bulbs with filaments brought about a ...
Optics & Photonics
Nov 8, 2021
11
316
Life on Earth has evolved alongside predictable cycles of day and night. But this pattern has become increasingly blurred. Between 2012 and 2016, satellite measurements revealed that the global area polluted by artificial ...
Plants & Animals
Aug 26, 2021
0
386
The universe contains a mind-boggling number of stars—but scientists' best estimates may be an undercount. A NASA-funded sounding rocket is launching with an improved instrument to look for evidence of extra stars that ...
Astronomy
Jun 4, 2021
1
642
What is believed to be a meteor lit the sky over eastern Cuba and caused an explosion, scientists on the island said Saturday. There were no reports of damage or injury.
Space Exploration
Mar 20, 2021
4
350
This image shows a new type of star that has never been seen before in X-ray light. This strange star formed after two white dwarfs—remnants of stars like our sun—collided and merged. But instead of destroying each other ...
Astronomy
Jan 11, 2021
0
19
By efficiently converting the blue light emitted from InGaN chips into yellow light and mixing them into white light, classic yellow Y3Al5O12: Ce (YAG) phosphor has proved itself to be the most prominent phosphor in white ...
Materials Science
Oct 27, 2020
0
8
Scientists at Tokyo Institute of Technology (Tokyo Tech) have discovered a new alkali copper halide, Cs5Cu3Cl6I2, that emits pure blue light. The combination of the two halide ions, chloride and iodide, gives the material ...
Condensed Matter
Sep 17, 2020
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10
Researchers are urging city-dwellers to switch off their garden lights at night-time after a study of magpies and pigeons revealed the harmful impact artificial light is having on the birds' sleep patterns.
Plants & Animals
Jul 23, 2020
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14
A blue flashlight that makes corals shine in the sea can help spot insects in nighttime forests, according to a recent Texas A&M AgriLife study. The peer-reviewed study suggests that blue light could help with pest control, ...
Plants & Animals
Jul 16, 2020
0
7
A polar is a highly magnetic type of cataclysmic variables containing an accreting white dwarf and a low-mass donor star. Due to the magnetism, the white dwarf would synchronously spin, however, there are still several asynchronous ...
Astronomy
Apr 29, 2020
0
9
