At the heart of every white dwarf star—the dense stellar object that remains after a star has burned away its fuel reserve of gases as it nears the end of its life cycle—lies a quantum conundrum: as white dwarfs add mass, ...
Astronomy
Jul 30, 2020
3
6186
Anyone wanting to avoid being caught out by speed cameras can do so very simply - by obeying the speed limits.
General Physics
Mar 25, 2014
14
0
Early universe observations by the James Webb Space Telescope (JWST) cannot be explained by current cosmological models. These models estimate the universe to be 13.8 billion years in age, based on the big-bang expanding ...
Astronomy
Aug 29, 2023
163
420
The surviving core of a gas giant has been discovered orbiting a distant star by University of Warwick astronomers, offering an unprecedented glimpse into the interior of a planet.
Astronomy
Jul 1, 2020
9
1861
Experimental physicist Prof. Thomas Zentgraf and his two colleagues from the University of Birmingham, Dr. Guixin Li and Prof. Shuang Zhang, have for the first time proved experimentally the nonlinear rotational Doppler effect ...
General Physics
Mar 24, 2016
5
287
Whether they know it or not, anyone who's ever gotten a speeding ticket after zooming by a radar gun has experienced the Doppler effect – a measurable shift in the frequency of radiation based on the motion of an object, ...
General Physics
May 10, 2011
2
1
Many students learn about the Doppler effect in physics class, typically as part of a discussion of why the pitch of a siren is higher as an ambulance approaches and then lower as the ambulance passes by. The effect is useful ...
General Physics
Aug 3, 2010
21
1
When resolving why electrons can never beat the speed limit set by light, it might be best to forget about time. Thanks to insight from studying movement inside a biological cell, it seems that light itself -- not the relativity ...
General Physics
Nov 19, 2010
155
0
The mystery of how Father Christmas can deliver presents to 700 million children in one night, fit down the chimney and arrive without being seen or heard has been 'solved' by a physicist at the University of Exeter.
General Physics
Dec 14, 2016
16
827
(PhysOrg.com) -- Researchers from Swinburne University and the University of Shanghai for Science and Technology have for the first time ever demonstrated a reversal of the optical ‘Doppler Effect’ – an advance ...
Optics & Photonics
Mar 7, 2011
1
0
