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Vor 2 Tagen · An aurora [a] (pl. aurorae or auroras), [b] also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), [c] is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of brilliant lights that appear ...
Vor 4 Tagen · Two effects of light have been interrogated extensively in human circadian and sleep research: (1) the acute suppression of melatonin in response to light exposure and (2) the ability of light exposure to shift circadian phase.
- Christine Blume, Christine Blume, Corrado Garbazza, Manuel Spitschan, Manuel Spitschan
- 10.1007/s11818-019-00215-x
- 2019
- Somnologie (Berl). 2019; 23(3): 147-156.
Vor 2 Tagen · When an electron in an excited molecule or atom descends to a lower energy level, it emits a photon of light at a frequency corresponding to the energy difference. Since the energy levels of electrons in atoms are discrete, each element and each molecule emits and absorbs its own characteristic frequencies. Immediate photon emission ...
Vor 3 Tagen · With lighting, it is all about what, when, where and how. Each type of room in your home has a specific function—or functions—different spaces and functions need different lighting at different times of the day or night. Deciding how best to light a busy, multi-purpose kitchen, a downstairs cloakroom, a child’s bedroom or a ...
Vor 4 Tagen · Light exists on a spectrum, and this guide explains that spectrum, its basis, and the varying ways in which its properties are exploited in the many different spectral bands.
Vor 3 Tagen · This question shows us five different light waves and asks us to work out which of them is not coherent with the others. We can recall that in order for waves to be coherent, they must have the same frequency and a constant phase difference from each other.
Vor 5 Tagen · Discover 12 light activities that can improve your well-being. From walking to gardening, learn how gentle movement benefits your health and how to incorporate them into your daily routine.
