Quantcast
ZME Science
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    Menu
    Natural Sciences
    Health
    History & Humanities
    Space & Astronomy
    Technology
    Culture
    Resources
    Natural Sciences

    Physics

    • Matter and Energy
    • Quantum Mechanics
    • Thermodynamics

    Chemistry

    • Periodic Table
    • Applied Chemistry
    • Materials
    • Physical Chemistry

    Biology

    • Anatomy
    • Biochemistry
    • Ecology
    • Genetics
    • Microbiology
    • Plants and Fungi

    Geology and Paleontology

    • Planet Earth
    • Earth Dynamics
    • Rocks and Minerals
    • Volcanoes
    • Dinosaurs
    • Fossils

    Animals

    • Mammals
    • Birds
    • Fish
    • Reptiles
    • Amphibians
    • Invertebrates
    • Pets
    • Conservation
    • Animals Facts

    Climate and Weather

    • Climate Change
    • Weather and Atmosphere

    Geography

    Mathematics

    Health
    • Drugs
    • Diseases and Conditions
    • Human Body
    • Mind and Brain
    • Food and Nutrition
    • Wellness
    History & Humanities
    • Anthropology
    • Archaeology
    • Economics
    • History
    • People
    • Sociology
    Space & Astronomy
    • The Solar System
    • The Sun
    • The Moon
    • Planets
    • Asteroids, Meteors and Comets
    • Astronomy
    • Astrophysics
    • Cosmology
    • Exoplanets and Alien Life
    • Spaceflight and Exploration
    Technology
    • Computer Science & IT
    • Engineering
    • Inventions
    • Sustainability
    • Renewable Energy
    • Green Living
    Culture
    • Culture and Society
    • Bizarre Stories
    • Lifestyle
    • Art and Music
    • Gaming
    • Books
    • Movies and Shows
    Resources
    • How To
    • Science Careers
    • Metascience
    • Fringe Science
    • Science Experiments
    • School and Study
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact
No Result
View All Result
ZME Science

No Result
View All Result
ZME Science

Home → Research → Discoveries

Speed of light may fluctuate in vacuum, controversial studies suggest

Tibi Puiu by Tibi Puiu
March 26, 2013
in Discoveries, Physics

Since Einstein first postulated his theories of general relativity, physicists have constructed models describing the Universe that mainly revolve around the idea that the speed of light is constant through vacuum. Two new studies, yet to have been published in peer-reviewed journals, suggest that light through vacuum actually fluctuates, albeit the deviations are infinitesimal. Still, if their new studies hold valid, then some ideas would require refinement, while a  caveat that states that the speed of lighet varies would need to be included.

speed-of-light One of the two papers is authored by Marcel Urban and colleagues  from the Univ. of Paris-Sud, who claim they have identified a quantum level mechanism for interpreting vacuum as being filled with pairs of virtual subatomic particles with fluctuating energy values. Though seemingly utterly empty, an intriguing concept in physics holds that vacuum is filled with continuously appearing and disappearing particle pairs such as electron-positron or quark-antiquark pairs. The lives of these subatomic particles is extremely short, however it may be enough to cause a displacement in the speed of light.

The team lead by Urban have created a detailed quantum mechanism that would explain the magnetization and polarization of the vacuum, referred to as vacuum permeability and permittivity, and the finite speed of light. In other words, the speed of light might depend on the properties of vacuum.

In the secondly discussed paper, Gerd Leuchs and Luis Sánchez-Soto, from the Max Planck Institute for the Physics of Light in Erlangen, Germany complement the findings of the first paper and claim that the speed of light and the so-called impedance of free space, are indications of the total number of elementary particles in nature.

If found valid, though, these fluctuations would be minuscule. Just how tiny? Well fluctuations in time are estimated to be somewhere around the realm of 50 attoseconds per square meter, where an attosecond is one quintilllionth (10^-18) of a second. Just so you can get a better idea one attosecond is to a second what one second is to 31.71 billion years and 320 attoseconds represent the require time for electrons to transfer between atoms.

Even so, traveling from extremely vast distances across, like light emitted from the early Universe, light might become visibly slowed down.  The two studies will first need to survive further vetting since both have yet to finish the peer-review process.

 source: Alpha Galileo Foundation

 

Was this helpful?


Thanks for your feedback!

Related posts:
  1. Not that fast: neutrinos shown to travel at sub-light speed, refuting controversial claims
  2. Supernova study might change how speed of light in vacuum is measured
  3. Studies suggest COVID-19 may cause hearing loss
  4. LA studies suggest coronavirus is far more widespread than expected, but experts are not convinced
  5. ‘Squeezed light’ with less noise than found in vacuum to boost sensors
Tags: speed of lightvacuum

ADVERTISEMENT
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
  • Reviews
  • More
  • About Us

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

No Result
View All Result
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

Don’t you want to get smarter every day?

YES, sign me up!

Over 35,000 subscribers can’t be wrong. Don’t worry, we never spam. By signing up you agree to our privacy policy.

✕
ZME Science News

FREE
VIEW