Search results
Results from the WOW.Com Content Network
Spectrum is a science fiction novel by Russian writer Sergei Lukyanenko, taking place in the near future. Contact with aliens allowed humanity to travel between planets through portals. Contact with aliens allowed humanity to travel between planets through portals.
Scribd Inc. (pronounced / ˈ s k r ɪ b d /) operates three primary platforms: Scribd, Everand, and SlideShare. Scribd is a digital document library that hosts over 195 million documents. Scribd is a digital document library that hosts over 195 million documents.
The Union Public Service Commission (UPSC; ISO: Saṁgha Loka Sevā Āyoga) is a constitutional body tasked with recruiting officers for All India Services and the Central Civil Services (Group A and B) through various standardized examinations. [1] In 2023, 1.3 million applicants competed for just 1,255 positions. [2]
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
They also used the non-relativistic Doppler shift equation on the spectrum of the star Sirius in 1868 to determine its axial speed. [34] [35] They were the first to take a spectrum of a planetary nebula when the Cat's Eye Nebula (NGC 6543) was analyzed. [36] [37] Using spectral techniques, they were able to distinguish nebulae from stars.
Brief Answers to the Big Questions is a popular science book written by physicist Stephen Hawking, and published by Hodder & Stoughton (hardcover) and Bantam Books (paperback) on 16 October 2018. The book examines some of the universe 's greatest mysteries, and promotes the view that science is very important in helping to solve problems on ...
Goethe argued that the continuous spectrum was a compound phenomenon. Where Newton narrowed the beam of light to isolate the phenomenon, Goethe observed that a wider aperture produces not a spectrum but rather reddish-yellow and blue-cyan edges with white between them. The spectrum appears only when these edges are close enough to overlap.
Electromagnetic waves in free space must be solutions of Maxwell's electromagnetic wave equation. Two main classes of solutions are known, namely plane waves and spherical waves. The plane waves may be viewed as the limiting case of spherical waves at a very large (ideally infinite) distance from the source.