Grow lights | Wikipedia audio article

This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Grow_light 00:01:26 1 Typical use 00:04:28 2 Common types 00:04:37 2.1 High intensity discharge (HID) lights 00:06:34 2.1.1 Metal halide (MH) 00:08:26 2.1.2 Ceramic metal halide (CMH, CDM) 00:09:34 2.1.3 Combination MH and HPS ("Dual arc") 00:10:26 2.1.4 High-pressure sodium (HPS) 00:13:18 2.1.5 Conversion bulbs 00:14:12 2.1.6 Switchable ballasts 00:14:57 2.2 Light emitting diodes (LEDs) 00:19:38 2.3 Fluorescent 00:20:18 2.3.1 Tube-style fluorescent lights 00:21:27 2.3.2 Compact fluorescent lights (CFLs) 00:23:25 2.3.3 Cold cathode fluorescent light (CCFL) 00:24:17 3 Light requirements of plants 00:24:54 3.1 Color spectrum 00:26:55 3.1.1 Red 00:27:35 3.1.2 Blue 00:28:08 3.1.3 Green 00:28:47 3.1.4 Ultraviolet 00:29:10 3.1.5 Mixed 00:32:35 3.2 Photoperiodism 00:34:15 3.3 Photosynthetically Active Radiation (PAR) 00:36:18 4 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services/invoke/uid/0000001a130b3f91 Other Wikipedia audio articles at: https://www.youtube.com/results?search_query=wikipedia+tts Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts Speaking Rate: 0.9175491095701095 Voice name: en-US-Wavenet-C "I cannot teach anybody anything, I can only make them think." - Socrates SUMMARY ======= A grow light or plant light is an artificial light source, generally an electric light, designed to stimulate plant growth by emitting a light appropriate for photosynthesis. Grow lights are used in applications where there is either no naturally occurring light, or where supplemental light is required. For example, in the winter months when the available hours of daylight may be insufficient for the desired plant growth, lights are used to extend the time the plants receive light. If plants do not receive enough light, they will grow long and spindly. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated. Outdoor conditions are mimicked with varying colour, temperatures and spectral outputs from the grow light, as well as varying the intensity of the lamps. Depending on the type of plant being cultivated, the stage of cultivation (e.g. the germination/vegetative phase or the flowering/fruiting phase), and the photoperiod required by the plants, specific ranges of spectrum, luminous efficacy and colour temperature are desirable for use with specific plants and time periods. Russian botanist Andrei Famintsyn was the first to use artificial light for plant growing and research (1868).

Видео Grow lights | Wikipedia audio article автора Enchanting Garden Themes