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 meant by 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. a particular kind or species of matter with uniform properties.
What is the meaning of nacreous?
Definition of nacreous : possessing the qualities of, consisting of, or abounding in nacre also : iridescent.
Where are noctilucent clouds found?
Synopsis. Noctilucent clouds are the highest clouds on Earth, and are located in the coldest part of planet Earth, the high-latitude summertime mesopause region (80–90 km). Composed of water-ice particles, they are nucleated by meteoric smoke particles.
What is inoculant fertilizer?
This amazing bacterial innoculant fertilizer contains dehydrated colonies of the beneficial microbes and accompanying micro-nutrients that live in healthy soil ecosystems. …
What is the nacreous layer?
The nacreous layer, or “mother-of-pearl”, is the innermost layer of many mollusk shells. It is widely studied as a model for understanding biomineralization processes, because of its regular brick wall-like structure. It is composed of polygonal aragonite crystals that are 5–15 μm in diameter.
What is non nacreous?
Non-nacreous pearls are composed of calcite (not nacre/aragonite). Technically, these pearls are classified as calcareous concretions, but they are commonly referred to as pearls. Unlike the pearls mentioned above, non-nacreous pearls are all natural and cannot be cultivated.
How do you identify noctilucent clouds?
For best results, look for these clouds from about May through August in the Northern Hemisphere, and from November through February in the Southern Hemisphere. Noctilucent clouds are primarily visible when the sun is just below the horizon, say, from about 90 minutes to about two hours after sunset or before sunrise.