Search results
Results from the WOW.Com Content Network
The laser was invented because spectroscopists took the concept of its predecessor, the maser, and applied it to the visible and infrared ranges of light. [87] The maser was invented by Charles Townes and other spectroscopists to stimulate matter to determine the radiative frequencies that specific atoms and molecules emitted. [ 87 ]
A Calutron is a sector mass spectrometer that was used for separating the isotopes of uranium developed by Ernest O. Lawrence [11] during the Manhattan Project and was similar to the Cyclotron invented by Lawrence.
The term was first used in 1876 by Dr. Henry Draper when he invented the earliest version of this device, and which he used to take several photographs of the spectrum of Vega. This earliest version of the spectrograph was cumbersome to use and difficult to manage. [13]
From 1993 to 2006 Adobe Systems changed the PDF specification several times to add new features. Various aspects of Adobe's Extension Levels published after 2006 were accepted into working drafts of ISO 32000-2 (PDF 2.0), but developers are cautioned that Adobe's Extensions are not part of the PDF standard. [8]
Apple stock received a rare downgrade to "sell" from an analyst on Tuesday. The downgrade highlights premium-valuation concerns and some negative headlines in recent months.
An example of spectroscopy: a prism analyses white light by dispersing it into its component colors. Spectroscopy is the field of study that measures and interprets electromagnetic spectra. [1] [2] In narrower contexts, spectroscopy is the precise study of color as generalized from visible light to all bands of the electromagnetic spectrum.
"It's almost like a family reunion for the Super Bowl this year," Manning tells PEOPLE, as he heads to his hometown along with his brothers Peyton and Cooper
2. These are used to sort/organize digital messages. 3. Fizzy beverages with a sharp, zesty taste. 4. The words in this category sound like things from the animal kingdom.