Results 111 to 120 of about 412,293 (160)

Probing individual quantum emitters in bulk semiconductors via photonic nanojets. [PDF]

open access: yesSci Adv
Semnani B   +9 more
europepmc   +1 more source

A Background to Background Radiation

The Physics Teacher, 2003
The study of radiation at the introductory college level usually includes experiments to determine the half-life of a radioactive isotope and also a study of the absorption of nuclear radiation by metal foils. These experiments are straightforward to do using a Geiger-Müller tube and scaler, and allow for the determination of well-known constants.
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The cosmic microwave background radiation

Reviews of Modern Physics, 1979
Radio Astronomy has added greatly to our understanding of the structure and dynamics of the universe. The cosmic microwave background radiation, considered a relic of the explosion at the beginning of the universe some 18 billion years ago, is one of the most powerful aids in determining these features of the universe. This paper is about the discovery
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Radiation in a massive Schwarzschild background

Physical Review D, 1991
We investigate the possibility of an important physical consequence arising from a recent theoretical observation by Kundu. This concerns the suppression of gravitational radiation from a weak source in the presence of a massive Schwarzschild background. We conclude that this result appears to be unlikely.
, Kozameh, , Newman, , Rovelli
openaire   +2 more sources

Internet background radiation revisited

Proceedings of the 10th ACM SIGCOMM conference on Internet measurement, 2010
The monitoring of packets destined for routeable, yet unused, Internet addresses has proved to be a useful technique for measuring a variety of specific Internet phenomenon (e.g., worms, DDoS). In 2004, Pang et al. stepped beyond these targeted uses and provided one of the first generic characterizations of this non-productive traffic, demonstrating ...
Eric Wustrow   +4 more
openaire   +1 more source

Cosmic Microwave Background Radiation

Reviews of Modern Physics, 1999
Most astronomers and physicists now believe that we live in an expanding universe that evolved from an early state of extremely high density and temperature. Measurements of the spectrum and anisotropy of the cosmic microwave background radiation (CMBR) provide strong evidence supporting this picture. Today, the spectrum of the CMBR matches that of a 2.
Lyman Page, David Wilkinson
openaire   +1 more source

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