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As of December 2021, Cocomelon – Nursery Rhymes has the most videos in the top 50 with thirteen, while YouTube and Jingle Toons have two. YouTube Rewind 2018: Everyone Controls Rewind surpassed "Baby" to become the most-disliked YouTube video within a week of being uploaded. On December 13, 2018, YouTube Rewind 2018: Everyone Controls Rewind ...
Rayon, also called viscose[ 1] and commercialised in some countries as sabra silk or cactus silk, [ 2] is a semi-synthetic fiber, [ 3] made from natural sources of regenerated cellulose, such as wood and related agricultural products. [ 4] It has the same molecular structure as cellulose.
In physics, an elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same. In an ideal, perfectly elastic collision, there is no net conversion of kinetic energy into other forms such as heat , noise, or potential energy .
A sewing needle, used for hand- sewing, is a long slender tool with a pointed tip at one end and a hole (or eye) to hold the sewing thread. The earliest needles were made of bone or wood; modern needles are manufactured from high carbon steel wire and are nickel - or 18K gold -plated for corrosion resistance. High-quality embroidery needles are ...
A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. A screw thread is the essential feature of the screw as a simple machine and also as a threaded fastener . The mechanical advantage of a screw thread depends on its lead ...
YouTube is an American online video sharing platform owned by Google. Accessible worldwide, [ note 1] YouTube was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim, three former employees of PayPal. Headquartered in San Bruno, California, United States, it is the second-most visited website in the world, after Google ...
Raymond Kurzweil ( / ˈkɜːrzwaɪl /, KURZ-wyle; born February 12, 1948) is an American computer scientist, author, entrepreneur, futurist, and inventor. He is involved in fields such as optical character recognition (OCR), text-to-speech synthesis, speech recognition technology and electronic keyboard instruments.
This beam can be propagated through an optical system with a given ray transfer matrix by using the equation [further explanation needed]: [] = [] [], where k is a normalization constant chosen to keep the second component of the ray vector equal to 1.