The invention of the staff is traditionally ascribed to Guido d’Arezzo in about the year 1000, although there are earlier manuscripts in which neumes (signs from which musical notes evolved) are arranged around one or two lines in order to orient the singer. Guido used three or four lines ofRead More →
The scientific and medical community will forever be indebted to an accidental discovery made by German physicist Wilhelm Conrad Röntgen in 1895. Who were the first radiographers? Wilhelm Conrad Roentgen, referred to as the father of diagnostic radiography, was a German physicist who first discovered the X-ray on Friday, NovemberRead More →
Speculative execution is an optimization technique where a computer system performs some task that may not be needed. Work is done before it is known whether it is actually needed, so as to prevent a delay that would have to be incurred by doing the work after it is knownRead More →
Alkaline hydrolysis (also called biocremation, resomation, flameless cremation, or water cremation) is a process for the disposal of human and pet remains using lye and heat. The process is being marketed as an alternative to the traditional options of burial or cremation. Is alkaline hydrolysis legal? Alkaline hydrolysis was legalizedRead More →
The guiro is believed to have originated in Puerto Rico with the Taíno people, the indigenous peoples of the Carribean in the 16th century and beyond. … The guiro was used in folk and dance music of Puerto Rico and Cuba for centuries before becoming popular in broader Latin musicalRead More →
Sir Frank Whittle’s Turbojet Concept Sir Frank Whittle was an English aviation engineer and pilot who joined the Royal Air Force as an apprentice, later becoming a test pilot in 1931. Whittle was only 22 when he first thought to use a gas turbine engine to power an airplane. DidRead More →
The oldest documentation of the water clock is the tomb inscription of the 16th century BC Egyptian court official Amenemhet, which identifies him as its inventor. Who invented clock? Though various locksmiths and different people from different communities invented different methods for calculating time, it was Peter Henlein, a locksmithRead More →
In programming terms, recursion happens when a function calls itself. If you have a problem that is too complex, you can use recursion to break it down into simpler blocks. You do this in real life all the time. Imagine you have a whole box full of $100 bills andRead More →
Known as “America’s Dairyland,” Wisconsin produces more than 3.37 billion pounds of cheese each year. Greater Green Bay has its own rich history of cheese-making, satisfying local tastes and cheese lovers from across the country. What football team wear cheese hats? When the Green Bay Packers take the field forRead More →
This is the latest accepted revision, reviewed on 19 September 2021. Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. … How was the firstRead More →