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What noctilucent mean?
Definition of noctilucent 1 [from noctilucence, after such pairs as English translucence : translucent] : bioluminescent. 2 [noct- + lucent] : visible or glowing at night — see noctilucent cloud.
How do you spell noctilucent?
adjective Meteorology. (of high-altitude clouds) visible during the short night of the summer.
What is the meaning of word inoculant?
Definitions of inoculant. a substance (a virus or toxin or immune serum) that is introduced into the body to produce or increase immunity to a particular disease. synonyms: inoculum. type of: substance.
What are noctilucent clouds?
Noctilucent clouds, or night shining clouds, are tenuous cloud-like phenomena in the upper atmosphere of Earth. They are the highest clouds in Earth’s atmosphere, located in the mesosphere at altitudes of around 76 to 85 km (249,000 to 279,000 ft).
What is a garden inoculant?
What is a Garden Soil Inoculant? Organic gardening soil inoculants are a type of bacteria added to the soil to “seed” the soil. These bacteria “infect” the legumes growing in the soil and cause the legumes to form the nitrogen fixing nodules that make peas and beans the nitrogen powerhouses they are.
Do you know inoculant?
Inoculant is Rhizobium bacteria that is applied to legume seed (clovers, cowpeas, etc.) before planting. Applying inoculant to the seed ensures that the correct type of bacteria specific to that legume are available to the plant once it germinates.
Why is being nonchalant good?
The benefit of being nonchalant isn’t about not being happy – it’s about not easily getting upset, angry, or stressed. And how might one do that? Well, when everything is comical is a good start. Just like most things have a silver lining, most things have a comedic edge to them, too.
What causes noctilucent clouds?
noctilucent cloud, rare cloud form, probably composed of ice crystals and dust from meteor smoke, that occurs at a higher altitude than any other cloud form (about 82 km [50 miles]).
Are noctilucent clouds rare?
Noctilucent clouds are extremely rare very high clouds seen in the night sky, usually on clear, summer nights. They become visible about the same time as the brightest stars and are usually bluish or silvery. Height of base: 200,000 feet.
What is the difference between noctilucent and bright?
noctilucent – shining or glowing by night; “the noctilucent eyes of a cat”. bright – emitting or reflecting light readily or in large amounts; “the sun was bright and hot”; “a bright sunlit room”.
What is the significance of noctilucent clouds?
Noctilucent clouds can form only under very restricted conditions during local summer; their occurrence can be used as a sensitive guide to changes in the upper atmosphere. They are a relatively recent classification. The occurrence of noctilucent clouds appears to be increasing in frequency, brightness and extent.
What is the radar reflectivity of a noctilucent cloud?
Noctilucent clouds are known to exhibit high radar reflectivity, in a frequency range of 50 MHz to 1.3 GHz.
Can You See nocturnal clouds at 50 degrees?
Noctilucent clouds may be seen by observers at a latitude of 50° to 65°. They seldom occur at lower latitudes (although there have been sightings as far south as Paris, Utah, Italy, Turkey and Spain), and closer to the poles it does not get dark enough for the clouds to become visible.