Eclectic Perambulations in the Noosphere
by Mila Zinkova
"The silken threads of spider webs are often just the right diameter to diffract sunlight. Owing to its wave properties, light can be deflected about fine particles, droplets and objects (on the order of several microns in diameter or width), such as the strands composing spider webs."
"The largest (to date) propeller is built by the German company Mecklenburger Metallguss GmbH:
"Weighing in at 131 tons, the - to date – largest ship propeller made in Waren on the Müritz River drives the Emma Maersk, the world’s largest container ship, with a load capacity of up to 14,770 twenty-foot containers, a length of 397 m, a width exceeding 56 m and a height of 68 m... Together, engine and propeller allow the oceangoing giant to cruise at speeds of 27 knots (50 km/h).""
"Thrips are tiny insects, typically just a millimetre in length. Some are barely half that size. If that’s how big the adults are, imagine how small a thrips’ egg must be. Now, consider that there are insects that lay their eggs inside the egg of a thrips.
That’s one of them in the image above – the wasp, Megaphragma mymaripenne. It’s pictured next to a Paramecium and an amoeba at the same scale. Even though both these creatures are made up of a single cell, the wasp – complete with eyes, brain, wings, muscles, guts and genitals – is actually smaller. At just 200 micrometres (a fifth of a millimetre), this wasp is the third smallest insect alive* and a miracle of miniaturisation."
Above : "Porpita porpita, commonly known as the blue button, is a marine organism consisting of a colony of hydroids found in tropical waters from California to the tropical Pacific, the Atlantic and Indian oceans It is often mistaken for a jellyfish, but although jellyfish and the blue buttons are part of the same phylum (Cnidaria), the blue button is part of the class Hydrozoa.
Jellyfish is also known as jellies or sea jellies or a stage of the life cycle of Medusozoa. Jellyfish have several different morphologies that represent several different cnidarian classes including the Scyphozoa (over 200 species), Staurozoa (about 50 species), Cubozoa (about 20 species), and Hydrozoa (about 1000–1500 species that make jellyfish and many more that do not). Jellyfish are found in every ocean, from the surface to the deep sea. Some hydrozoan jellyfish, or hydromedusae, are also found in fresh water; freshwater jellyfish are less than an inch (25 mm) in diameter, are colorless and do not sting. The jellyfish is one of the wonders of marine life.
These are large beautiful and quite attractive colors but today we are discussing some of the most common known jellyfishes. Join me as we look at 17 of the most beautiful !"
