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Liesegang rings (/ ˈ l iː z ə ɡ ɑː ŋ /) (also called Liesegangen rings or Liesegang bands) are colored bands of cement observed in sedimentary rocks that typically cut across bedding. These secondary sedimentary structures exhibit bands of minerals that are arranged in a regular repeating pattern.
The Olympic rings: Use: Sport : Proportion: 2:3: Adopted: 14 August 1920: Design: Five interlaced rings of equal dimensions (the Olympic rings), used alone, in one or in five different colours. When used in its five-colour version, these colours shall be, from left to right, blue, yellow, black, green, and red.
Ring color Significant figures Multiplier Tolerance Temperature coefficient Name Code RAL Percent [%] Letter [ppm/K] Letter; None – – – – ±20: M – Pink: PK: 3015 – ×10 −3: × 0.001 – – Silver: SR – – ×10 −2: × 0.01: ±10: K – Gold: GD – – ×10 −1: × 0.1: ±5: J – Black: BK: 9005: 0: ×10 0: × 1 – 250: U ...
A limbal ring is a dark ring around the iris of the eye, where the sclera meets the cornea. It is a dark-colored manifestation of the corneal limbus resulting from optical properties of the region. The appearance and visibility of the limbal ring can be negatively affected by a variety of medical conditions concerning the peripheral cornea.
Newton's rings is a phenomenon in which an interference pattern is created by the reflection of light between two surfaces, typically a spherical surface and an adjacent touching flat surface. It is named after Isaac Newton , who investigated the effect in 1666.
Ring-necked snakes are fairly similar in morphology throughout much of their distribution. Ring-necked snake from Mount Diablo, California. Its dorsal coloration is solid olive, brown, bluish-gray to smoky black, broken only by a distinct yellow, red, or yellow-orange neck band.
The rings of Neptune are made of extremely dark material, likely organic compounds processed by radiation, similar to those found in the rings of Uranus. [5] The proportion of dust in the rings (between 20% and 70%) is high, [5] while their optical depth is low to moderate, at less than 0.1. [6] Uniquely, the Adams ring includes five distinct ...
In its full form, a corona consists of several concentric, pastel-colored rings around the celestial object and a central bright area called an aureole. [2] [3] The aureole is often (especially in case of the Moon ) the only visible part of the corona and has the appearance of a bluish-white disk which fades to reddish-brown towards the edge.
Similar to coloured rings or bands are leg-flags, usually made of Darvic and used in addition to numbered metal bands. Although leg-flags may sometimes have individual codes on them, their more usual use is to code for the sites where the birds were banded in order to elucidate their migration routes and staging areas.
25-pair color code. Single-core 25-pair, 50-conductor cable. The 25-pair color code, originally known as even-count color code, [1] is a color code used to identify individual conductors in twisted-pair wiring for telecommunications .