Physics With Muhammad Talha

Physics With Muhammad Talha Muhammad Talha's here. A Physics Teacher/Instructor Providing The Services In Education Sector...

Chapter # 14 ElectromagnetismTopic: Introduction to Electromagnetism, How magnetic field produces when charges are in m...
26/10/2025

Chapter # 14 Electromagnetism

Topic: Introduction to Electromagnetism, How magnetic field produces when charges are in motion....










26/10/2025

Today we will start Chapter #14 Electromagnetism

Who knew it was my fate..!
25/10/2025

Who knew it was my fate..!




Quick Recap of Chapter #13 Current Electricity (Electrodynamics) ...
15/10/2025

Quick Recap of Chapter #13
Current Electricity (Electrodynamics)










The 2025 Nobel Prize in Physics recognises experiments that demonstrated how quantum tunnelling can be observed on a mac...
07/10/2025

The 2025 Nobel Prize in Physics recognises experiments that demonstrated how quantum tunnelling can be observed on a macroscopic scale, involving many particles.

John Clarke, Michel Devoret and John Martinis – awarded this year’s Nobel Prize in Physics – constructed an experiment using a superconducting electrical circuit.

The chip that held this circuit was about a centimetre in size. Previously, tunnelling and energy quantisation had been studied in systems that had just a few particles; here, these phenomena appeared in a quantum mechanical system with billions of Cooper pairs that filled the entire superconductor on the chip. In this way, the experiment took quantum mechanical effects from a microscopic scale to a macroscopic one.

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A quantum mechanical system behind a barrier can have varying amounts of energy, but it can only absorb or emit specific...
07/10/2025

A quantum mechanical system behind a barrier can have varying amounts of energy, but it can only absorb or emit specific amounts of this energy. The system is quantised. Tunnelling occurs more easily at a higher energy level than at a lower one so, statistically, a system with more energy is held captive for less time than one with less energy.

This year’s Nobel Prize laureates in physics conducted experiments with an electrical circuit in which they demonstrated both quantum mechanical tunnelling and quantised energy levels in a system big enough to be held in the hand.

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When you throw a ball at a wall, you can be sure it will bounce back at you. You would be extremely surprised if the bal...
07/10/2025

When you throw a ball at a wall, you can be sure it will bounce back at you.

You would be extremely surprised if the ball suddenly appeared on the other side of the wall. In quantum mechanics this type of phenomenon is called tunnelling and is exactly the type of phenomenon that has given it a reputation for being bizarre and unintuitive.

The 2025 laureates in physics John Clarke, Michel H. Devoret and John M. Martinis, used a series of experiments to demonstrate that the bizarre properties of the quantum world can be made concrete in a system big enough to be held in the hand. Their superconducting electrical system could tunnel from one state to another, as if it were passing straight through a wall. They also showed that the system absorbed and emitted energy in doses of specific sizes, just as predicted by quantum mechanics.

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Have you heard of Cooper pairs?In an ordinary conductive material, current flows because there are electrons that are fr...
07/10/2025

Have you heard of Cooper pairs?

In an ordinary conductive material, current flows because there are electrons that are free to move through the entire material. In some materials, the individual electrons that push their way through the conductor may become organised, forming a synchronised dance that flows without any resistance. The material has become a superconductor and the electrons are joined together as pairs. These are called Cooper pairs.

Cooper pairs behave completely differently to ordinary electrons. Electrons have a great deal of integrity and like to stay at a distance from each other – two electrons cannot be in the same place if they have the same properties. We can see this in an atom, for example, where the electrons divide themselves into different energy levels, called shells. However, when the electrons in a superconductor join up as pairs, they lose a bit of their individuality; while two separate electrons are always distinct, two Cooper pairs can be exactly the same. This means the Cooper pairs in a superconductor can be described as a single unit, one quantum mechanical system. In the language of quantum mechanics, they are then described as a single wave function. This wave function describes the probability of observing the system in a given state and with given properties.

The properties of this wave function play a leading role in the 2025 physics laureates’ experiments.

The 2025 Nobel Prize in Physics has been awarded to John Clarke, Michel H. Devoret and John M. Martinis “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.”

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Topic: Wheatstone Bridge + Potentiometer.Introduction: How Charles Wheatstone devised a circuital technique to measure u...
04/10/2025

Topic: Wheatstone Bridge + Potentiometer.

Introduction: How Charles Wheatstone devised a circuital technique to measure unknown resistance value, How we can get different values of resistance from any fixed resistor......










30/09/2025

Hectic Breakfast..

Topic: Kirchhoff's 2nd Law/Rule. (Voltage Law)Introduction: How Kirchoff's helps us to find the voltage in any complex c...
26/09/2025

Topic: Kirchhoff's 2nd Law/Rule. (Voltage Law)

Introduction: How Kirchoff's helps us to find the voltage in any complex circuit....










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