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How do you explain the characteristics of laser beam?
Laser beams are normally characterized as focused (the beam size enlarges slowly with distance), intense (don't look into a laser beam), and mono-energetic (single-color light). What is laser? -- laser stands for "light amplification by stimulated emission of radiation." What is being stimulated in laser? -- gas, solid-state, semiconductor, dye, chemical etc. Each type of laser has its own characteristics and pros and cons. The origin of laser radiation in a gas laser -- take a gas laser, for example. Argon gas is trapped inside a pressurized tube (low pressure to be exact). The tube's curved wall is coated with metal for reflection. Two flat mirrors are situated at each end of the long cylinder. Energy, in the order of kilowatts, is supplied to ionize the Argon gas. The excited Argon atoms will relax to release light in a very narrow spectrum, in the order of Watts -- very inefficient indeed. The mirrors and shiny curved wall are to keep the light generated to be trapped inside the tube intentionally, so that the lasing action can be amplified. The mirror at the "business" end has a small opening to allow light to escape. Hence the exiting laser beam is more or less uni-directional (focused). The light coming out of an Argon gas ranges from red to UV, but a filter at the exit can narrow the spectrum further to mono-chromatic. The filtered single-frequency light has little dispersion (photons will be traveling at about the same speed and few interference). The light is so intense and concentrated (~ 1 W over a beam size of 0.1 cm^2) that looking into a laser beam is detrimental to your eyes. Looking into a key-chain laser is not advisable either. Please see the related link for more details. ==============================
If a light beam travels for the entire lifetime of the universe how far does it go?
A light beam can go 158E24 meters to to the end of the Universe.
Condition that will increase the moment in beam?
If the beam is fixed to the wall at one end and then you apply a force at the other, then bingo!, you have a moment about the point in the wall.
What produces a laser beam?
A simple and by no means comprehensive explaination is;A L.A.S.E.R (Light Amplification by Stimulated Emission of Radiation) is produced by 'pumping' energy into electromagnetic radiation, often light within a crystal or gas which has a mirror at one end and a semi-permeable mirror at the other. This energy aligns the light rays and gives them all the same frequency. They are then called 'coherent'. They bounce between the mirrors until such an energy lever is acheived whereby the beam breaks out of the semi mirror in a tight powerful beam.
What is the difference between a beam balance and spring balance?
A beam balance - has a weight at one end, and it 'balances with the load placed on the other end. A spring balance - has a vertical spring attached to a scale - that shows the weight of an object suspended from it.
How do you get passed the laser beam in the BAD control center?
You cant. But maybe at the end.
What is spiking in ruby laser?
The emission of laser beam through the semitransparent end face actually consists of spikes of high intensity emissions. This phenomen is called spiking of the laser.
What is finite sets?
A finite set is a set that has numbers you can count. Its not like infinite with no end it has an end.
What is finite sequence?
Has an end.
What is the difference between an infinite sequence and a finite sequence?
A finite sequence has a beginning and an end, whereas an infinite sequence has no end.
What is finite and infinite set?
A set which containing $and pi are the end blocks are the finite and without these are infinite
What does finite or infinite mean?
finite means something will come to an end in a certain time. infinite means it has no end i.e. keeps going
What does finite or infinite mean in maths?
infinite means never ending whilst finite means it has a end
How do you use finite resources well?
You don't. End of.
What finite math?
Finite means to end. So finite math is possible math that has to do with numbers ending; no irrational(unending) numbers. Ex: 2+2=4
What is finite math?
Finite means to end. So finite math is possible math that has to do with numbers ending; no irrational(unending) numbers. Ex: 2+2=4
Is the set are all the letter alphabet finite or infinite?
Finite ends. Infinite has no end in site. The alphabet has 26 letters therefore, it's indeed a FINITE sequence.
