Centre for Advanced Studies in Physics - CASP GCU Lahore

17/03/2023

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03/03/2022

It is in control if you know its speed. Watch out this amazing experiment on laser blasters
The idea uses a laser, a rotating fan plate and merely a camera. The laser pointing towards a fan plate and sideways camera recording make this watchout an amazing presentation of speed control.

Try this at home too.

22/05/2021

https://www.pursuephysics.com/post/can-the-speed-of-light-be-As of right now, light has been found to travel above the limit in mediums including optical fibres and atomic gases. Clément Goyon, an experimental physicist at Lawrence Livermore National Laboratory in California is currently proving how to adjust the speed of light in plasma and therefore, creating an order-of-magnitude for the speed of light. This order could help improve control of inertial-confinement-fusion experiments. This could mean that there is a future for plasma-based optics in high powered lasers.



Then light travels through different materials, the velocity can change from the speed through a vacuum(the accepted value). The velocity through different materials are called group velocity and can be larger, or smaller than the speed of light c. This factors in how the shape of a light pulse spreads and distorts as it travels through the material. Goyon and his colleagues at LLNL created a hydrogen-helium plasma by ionising a jet of the gas with a polarised laser beam. Next, they fired a second laser beam at the new plasma. There the paths cross, the horizontal component of the second laser pulse slowed in response to a change in the plasmas refractive index. The slowing of the light was caused by the interaction of the 2 lasers.



By measuring the delay in time, between the vertical and horizontal components of the second laser pulse, Goyon observed that the components had different speeds. By alerting the frequency difference between the beams, they found that they could tune the speed from 0.995c to between 0.12c and − 0.34c. This means that the peak of the pules actually travelled faster than the speed of light.

Welcome to Pursue Physics, a home run physics blog, with all the up and coming news! Can the speed of light change, find out how Clément Goyon discover he could change c, using 2 lasers!

22/05/2021

https://phys.org/news/2021-05-atoms-resolution.htmlResearchers see atoms at record resolution
by David Nutt, Cornell University
In 2018, Cornell researchers built a high-powered detector that, in combination with an algorithm-driven process called ptychography, set a world record by tripling the resolution of a state-of-the-art electron microscope.
As successful as it was, that approach had a weakness. It only worked with ultrathin samples that were a few atoms thick. Anything thicker would cause the electrons to scatter in ways that could not be disentangled.
Image Text: This image shows an electron ptychographic reconstruction of a praseodymium orthoscandate (PrScO3) crystal, zoomed in 100 million times.
Credit: Cornell University

In 2018, Cornell researchers built a high-powered detector that, in combination with an algorithm-driven process called ptychography, set a world record by tripling the resolution of a state-of-the-art electron microscope.

07/04/2021

Alas!

Remembering the co-inventor of the blue LED, Isamu Akasaki (赤崎 勇), who has sadly passed away at the age of 92.

Illuminating our world by inventing a new energy-efficient and environment-friendly light source – the blue light-emitting diode LED – Akasaki was awarded the 2014 Nobel Prize in Physics with Hiroshi Amano (天野 浩) and Shuji Nakamura (中村修二).

05/03/2021

Starting from 12th March '21
At CASP lawn, between 9a.m. to 4p.m.

02/03/2021

"Crystallization is one of the most important dimensions of the illusion of form.” – Walter Russell

Study the illusion of form that is the material world at the quantum scale: Enroll in the Resonance Academy’s free Unified Science Course with Nassim Haramein and participants from more than 80 countries at ResonanceScience.org (also available in French & Spanish)

Photo: Dragon scale Calcite (found only in the swamps of Southern Missouri, USA)

23/02/2021

“This the first time we’ll be flying Linux on Mars,” NASA Jet Propulsion Laboratory (JPL) senior engineer Tim Canham said in an interview with the the Institute of Electrical and Electronics Engineers (IEEE). “The software framework that we’re using is one that we developed at JPL for cubesats and instruments, and we open-sourced it a few years ago.” It’s called F’ (pronounced “F prime”). The fact that it’s open source means if you want to fly with Linux here on Earth using the same software JPL does, you absolutely can.

A rover and a helicopter running Linux land on the Red Planet.

21/02/2021

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