What Does An Electron ACTUALLY Look Like? - YouTube - PBS Space Time - physics - new episode

An electron is a ball of energy.As Einstein discovered in his General Theory of Relativity,bound energy also has mass.An electron's classical radius is 2.818x10 (-15)m;but its true size is 10 (-17)m,or at least 100x smaller than the classical radius.Photons are excitations of the Electromagnetic Field.Electron and Positron pairs are excitations of the Electron Field and may annihilate one another.In Quantum Field Theory,each elementary particle,such as an electron,is an excitation of its own quantum field.Quantum particles consist of waves,but when we examine a specific particle,it becomes a point.*Dr. Matt O'Dowd is an Australian astrophysicist and presenter of PBS Space time and wrote this episode.

Brightest Gamma-Ray Burst Of All Time had a curious feature, NASA Fermi Finds - NASA Goddard - astrophysics

Gamma-Ray Bursts are formed when a new black hole expels matter into space.The Brightest Burst of All Time (BOAT) was detected using the NASA Fermi Space Telescope om 2022.A study of the data has revealed a new feature.The particles emitting the Gamma-Ray line must have been traveling at 99.9% of the speed of light.The speed of light is the fastest speed in the universe and is a constant speed,regardless of how fast you're traveling when you observe light,according to Albert Einstein's Special Theory of Relativity,the American Museum of Natural History (AMNH) points out.His exploration of the fundamental properties of light was an astonishing recognition and revolutionized our understanding of space and time.The Special Theory laid the groundwork for his greatest achievement,the General Theory of Relativity.*Both the Special Theory and General Theory have repeatedly been verified.For instance,the Special Theory,proposed in 1905,has been validated through experiments using high-speed particles and precise time measurements.For example,the time dilation effect has been confirmed using atomic clocks on fast-moving aircraft.One of the earliest confirmations of the General Theory,proposed in 2015,took place in 1919 with observations of the bending of light by a solar eclipse.A more recent confirmation was the detection of gravitational waves in 2018 by two LIGOs,Laser Interferometer Gravitational-Wave Observatories. * Credit:NASA Goddard Space Flight Center

Is this why Venus lost its oceans? | BBC Global - YouTube - planetary science

Earth and Venus are made of similar materials and are about the same size;yet Earth has an abundance of water,while Venus is bone dry.Resaerchers at the University of Colorado Boulder think that the answer lies in a non-thermal process called 'HCD + Dissociative Recombination'.We spoke with co-lead researcher of the study Dr.Michael Chaffin to learn more.*Report by BBC Global and edited by Andrew Taylor

Particles Unknown: Hunting Neutrinos | Full Documentary | NOVA | PBS - YouTube - physics

About Ion Thruster Engines - physics

According to NASA,the most common propellant used in ion propulsion is the heavy neutral gas Xenon,which is easily ionized and has a high atomic mass,thus generating a desirable level of thrust when ions are accelerated.The thrusters work by using an electrical charge to accelerate ions from Xenon fuel to a speed 7-10 times the speed of chemical engines.An ion is defined as an atom or molecule that has gained or lost one of its valence eletrons,giving it a net positive or negative electrical charge.So it is a charged entity,as opposed to a neutral one.

This Thruster can Propel a Spacecraft Almost Indefinitely - Science Channel - physics

An ion thruster engine has been chosen to propel the NASA/ESA Gateway space station in lunar orbit.

Albert Einstein Explains Theory of Relativity | Albert Einstein Real Video - Hear Einstein discuss E=MC2 in English - Physics

Gravitational waves create a 'cosmic symphony' that scientists are tuning into - National Science Foundation

Based on his Theory of General Relativity,in 1915 Albert Einstein predicted the existence of gravitational waves,which are ripples in spacetime caused by massive cosmic events.Their existence wasn't verified until 2016 by the Laser Interferometer Gravitational-Wave Observatory (LIGO).Additionally,a network of two radio telescopes at Arecibo,Puerto Rico and Green Bank,West Virginia monitoring pulsars,which are highly magnetized,rapidly rotating neutron stars,were successfully enlisted in the search for gravitational waves.It is the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) sponsored by the National Science Foundation,and reported the first results of the project in 2023,the detection of background gravitational waves based on more than 15 years of radio telescope data.

Paul Rudd Explores the Quantum Realm with NASA

Einstein's Quantum Riddle | Full Documentary | NOVA | PBS - Physics

An experiment was conducted at Roque de los muchachos Observatory,part of the European Northern Observatory,La Palma,Canary Islands,Spain.

Alien Antimatter Crashes into Earth

Alien Antimatter Crashes into Earth: It came from outer space. And it was tiny.

L1.1 Quantum mechanics as a framework. Defining linearity. - MIT 8.04 Quantum Physics I - Instructor:Barton Zwiebach

Climate modelers awarded with the 2021 Nobel Prize in Physics | DW News