CERN Large Hadron Collider
Why is the Large Hadron Collider as large as it is? I heard today that the actual accelerator portion is only 40 Meters long, the rest is (mostly) magnets that steer the particles, so why does the accelerator need to be 17 miles in circumference? Does making it larger provide any advantages?
(asked Rick)
Categories: Electromagnetism, Interesting Questions Tags: ask Physics, Large Hadron Collider, particles, physics, project, rest, today
Sequence of Learning Physics
In what sequence should these chapters be prepared for my exams:-
units and dimensions,kinematics,laws of motion,work power and energy,motion of system of particles and rigid body dynamics,gravitation.
Apoorv Katoch asked
Answer:
It is better to follow the same pattern as given in NCERT text book
Categories: Ask Physics Tags: answer, ask, ask Physics, Auto, body, doubt, Draft, laws of motion, motion, Online, particles, physics, project, solved, solved paper, solved problems, solved questions, system, work
Problem from Kinematics
Devika posted:
There are two particles A and B moving with same velocity u such that initially there velocity are perpendicular to each other and distance between them is L.the velocity of A is always directed towards B.find the distance between them after a long time.
Ans will be posted soon
Categories: KINEMATICS Tags: ask Physics, devika, distance, kinematics, particles, perpendicular, physics, problem, time, velocity
Cosmic Rays
Do cosmic rays get reflected by a mirror?Just like the normal(visible spectrum) light, do cosmic rays and lasers get reflected by a polished surface or are they strong enough to penetrate through them? (Sangeetha Varma posted this question)
Answer: Cosmic rays are energetic charged subatomic particles, originating from outer space. They may produce secondary particles that penetrate the Earth’s atmosphere and surface. Cosmic rays were thought to be electromagnetic radiation in the past. Most primary cosmic rays entering the atmosphere from deep space are composed of subatomic particles that normally occur on Earth, such as protons, atomic nuclei, or electrons. However, a very small fraction are particles of antimatter, such as positrons or antiprotons. The precise nature of this remaining fraction is an area of active research.
Visit the following links for more information
- http://hyperphysics.phy-astr.gsu.edu/hbase/astro/cosmic.html
- http://helios.gsfc.nasa.gov/cosmic.html
- http://imagine.gsfc.nasa.gov/docs/science/know_l1/cosmic_rays.html
Categories: General, Interesting Questions Tags: ask, doubt, earth, Online, particles, physics, project, radiation, solved, solved paper, solved problems, solved questions, space, subatomic particles, surface
