The physics being railway ticket booking

The physics being railway ticket booking

Posted as received via WhatsApp Do you Know why  IRCTC does not allow you to choose seats? Would you believe that the technical reason behind this is PHYSICS. Booking a seat in a train is far more different than booking a seat in a theatre. Theatre is a hall, whereas train is a moving object. So safety concern is very high in trains. Indian railways ticket booking software is designed in such a way that it will book tickets in a manner that will distribute the load evenly in a…

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Question from Einstein’s Theory of relativity

Question from Einstein’s Theory of relativity

From: venky Subject: einstein’s theory of relativity Message Body: when two electrons leave a radioactive sample in opposite directions, each having a speed 0.67c with respect to the sample, the speed of one electron relative to the other is l.34c according to classical physics. What is the relativistic result? We may regard one electron as the S-frame, the sample as the S’-frame, and the other electron as the obje(‘t whose speed in the S-frame we seek . Then u ‘ = 0.67c v = 0.67c and u= u ‘ +…

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Question from quantum field theory

Question from quantum field theory

From: Krish Subject: Quantum field theory Message Body: This question relates to the gauge theories behind the strong, weak and electromagnetic forces. A beautiful intertwining of theoretical physics and pure mathematics is when group theory is used to described these forces. For example, the Standard Model of particle physics is perfectly described by: SU(3) x SU(2) x U(1)…..I have enough knowledge in group theory to understand special groups (or at least, understand their conditions) and the unitary group. However, what I do not understand is how the aforementioned groups even…

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The dimples of a golf ball

The dimples of a golf ball

How exactly do the dimples of a golf ball affect the way it flies? What are the different materials golf balls are made of and how do they affect the balls flight/takeoff? Asked┬áJacob Beecher The basic role of the dimples is to mdecrease drag and thus enabling the ball to cover greater distances. Golf is normally played at open areas with calm surroundings. The flow of air islly the drag is less but when the ball iinitially the drag is less but when the ball is tring to separate the…

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Why is the mass of proton less than the mass of neutron?

Why is the mass of proton less than the mass of neutron?

Why is the mass of proton less than the mass of neutron? Asked Vamak Singh The standard values of masses of proton, neutron and electron are as given below. Particle Charge Mass (g) Proton +1 1.6727 x 10–24 g Neutron 0 1.6750 x 10–24 g Electron -1 9.110 x 10–28 g Please refer to http://physics.stackexchange.com/questions/34245/why-is-neutron-heavier-than-proton

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