Description : Developed the first laser a. Charles Townes b. Theodore Maiman c. Gordon McKenzie d. Albert Einstein
Last Answer : b. Theodore Maiman
Description : Who initially gave the idea of laser (without using the acronym)? (a) Gordon Gould (b) Theodore Maiman (c) Albert Einstein (d) Charles Townes
Last Answer : Ans:(c)
Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer
Last Answer : C. Charles Townes and Arthur Schawlow
Description : The scientist who built the first optical maser ∙ A. Charles Townes ∙ B. GA Bockham ∙ C. Theodore Maiman ∙ D. ACS Van Heel
Last Answer : ∙ C. Theodore Maiman
Description : They experimented with light transmission cables through bundle of fibers and lead to the development of flexible fiberscope. ∙ A. Townes, Schawlow and Kao ∙ B. Maiman, Kao and Bockham ∙ C. Maurer, Kapron and Keck ∙ D. Van Heel, Hopkins and Kapany
Last Answer : D. Van Heel, Hopkins and Kapany
Description : Developed an optical fiber with losses less that 2 dB/km ∙ A. Kao and Bockham ∙ B. Maiman, Kao and Bockham ∙ C. Maiman and Schawlow ∙ D. Kapron, Keck and Maurer
Last Answer : ∙ A. Kao and Bockham
Description : Who invented the laser? (1) Sir Frank Whittle (2) Fred Morrisson (3) T.H. Maiman (4) Dr. Charles H. Jones
Last Answer : T.H. Maiman
Description : They proposed a new communication medium using cladded fiber cables. ∙ A. Kao and Bockham ∙ B. Maiman, Kao and Bockham ∙ C. Kapron, Keck and Maurer ∙ D. Maiman and Schawlow
Description : Human laser was developed by A. Javen at Bell laboratory in ∙ a. 1960 ∙ b. 1962 ∙ c. 1963 ∙ d. 1964
Last Answer : a. 1960
Description : Who developed the small pox vaccination? A. Eduard Jenner B. Alexander Fleming C. Albert Einstein D. None of these
Last Answer : A. Eduard Jenner
Description : The law that states “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted” is known as ____________. ∙ A. Einstein law of photon ∙ B. Marconi’s law ∙ C. Maxwell’s law ∙ D. Plank’s law
Last Answer : D. Plank’s law
Description : The first laser emitted ∙ a. Pulses of 694 nm red light ∙ b. A continuous red beam ∙ c. Pulses of white light from a helical flash lamp ∙ d. Spontaneous emission
Last Answer : ∙ a. Pulses of 694 nm red light
Description : Optical amplifiers use a ____________________ laser.
Last Answer : pump
Description : For laser diodes, the term ____________________ is used instead of bandwidth.
Last Answer : linewidth
Description : Which light emitter is preferred for high-speed data in a fiber-optic system? ∙ A. incandescent ∙ B. LED ∙ C. neon ∙ D. laser
Last Answer : D. laser
Description : Coherence of laser light is important for _________ ∙ a. Light propagation ∙ b. Getting laser light to pass through air ∙ c. Drilling holes ∙ d. Holography
Last Answer : d. Holography
Description : What is used to block light from a laser and let other light through ∙ a. Neutral density ∙ b. Color ∙ c. Interference ∙ d. Spatial
Last Answer : ∙ c. Interference
Description : Laser light is very bright because it is ∙ a. Pure ∙ b. White ∙ c. Coherent ∙ d. Monochromatic
Last Answer : c. Coherent
Description : Which light emitter is preferred for high speed data in a fiber-optic system ∙ a. Incandescent ∙ b. LED ∙ c. Neon ∙ d. Laser
Last Answer : ∙ d. Laser
Description : The laser frequency when the light has the wavelength 800 nm is ∙ a. 375 x 1012 Hz ∙ b. 475 x 1015 Hz ∙ c. 375 x 109 Hz ∙ d. 375 x 1018 Hz
Last Answer : d. 375 x 1018 Hz
Description : Which type of laser is the simplest to modulate directly by changing its excitation? ∙ a. Semiconductor ∙ b. Ruby ∙ c. Helium-neon ∙ d. Neodymium-YAG
Last Answer : a. Semiconductor
Description : Which of the following is used as an optical receiver in fiber optics communications ∙ a. APD ∙ b. Tunnel diode ∙ c. Laser diode ∙ d. LED
Last Answer : a. APD
Description : Which of the following contributes to the broadening of laser emission bandwidth? ∙ a. Doppler shift of moving atoms and molecules ∙ b. Amplification within the laser medium ∙ c. Coherence of the laser light ∙ d. Optical pumping of the laser transition
Last Answer : Doppler shift of moving atoms and molecules
Description : Which of the following factor does not harm laser efficiency? ∙ a. Atmospheric absorption ∙ b. Excitation energy not absorbed ∙ c. Problems in depopulating the lower laser level ∙ d. Inefficiency in populating the upper laser level
Last Answer : ∙ a. Atmospheric absorption
Description : Which is the proper measurement of average power emitted by a pulsed laser? ∙ a. Energy x time ∙ b. Pulse energy x repetition rate ∙ c. Pulse energy / repetition rate ∙ d. Peak power x pulse length
Last Answer : ∙ b. Pulse energy x repetition rate
Description : Which laser emits light in the visible range 400 to 700 nm? ∙ a. Argon-ion ∙ b. Nitrogen ∙ c. Carbon-dioxide ∙ d. Neodymium-YAG
Last Answer : a. Argon-ion
Last Answer : Semiconductor
Description : A dielectric waveguide for the propagation of electromagnetic energy at light frequencies ∙ a. Stripline ∙ b. Microstrip ∙ c. Laser beam ∙ d. Fiber optics
Last Answer : d. Fiber optics
Description : Laser light is ______ emission. ∙ a. Coherent ∙ b. Stimulated ∙ c. Spontaneous ∙ d. Coherent and stimulated
Last Answer : ∙ d. Coherent and stimulated
Description : What generates a light beam of a specific visible frequency? ∙ a. Laser ∙ b. Maser ∙ c. Infrared ∙ d. Flashlight
Last Answer : ∙ a. Laser
Description : LASER stands for: a. Light Amplification by Simulated Emission of Radiation b. Light Amplification by Stimulated Emission of Radiation c. Light Amplification by Simulated Emitted Rays d. Light Amplification by Stimulated Emitted Rays
Last Answer : b. Light Amplification by Stimulated Emission of Radiation
Description : What movie cast included James Garner, Richard Attenbourough, Steve McQueen, Charles Bronson, Donald Pleasance, James Coburn, Gordon Jackson, Angus McPhee among many others?
Last Answer : The Great Escape
Description : Novelist, Mr. Salman Rushdie was awarded “Knighthood” by (1) Queen Elizabeth II (2) Prince Charles (3) Mr. Gordon Brown (4) Mrs. Margaret Thatcher
Last Answer : Queen Elizabeth II
Description : What movie cast included James Garner, Richard Attenbourough, Steve McQueen, Charles Bronson, Donald Pleasance, James Coburn, Gordon Jackson, Angus McPhee among many others
Description : When did Albert Einstein design the first aircraft?
Last Answer : Albert Einstein did not design airplanes- first, last or inbetween.
Description : Which of the following events occurred first? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Marconi first transmitted a wireless signal (4) Madame Marie Curie be-came the first woman Nobel Prize winner
Last Answer : (2) Max Planck unveiled the Quantum Theory Explanation: General Theory of Relativity: a theory of gravitation developed by Einstein in the years 1907-1915; Quantum Theory of Max Planck: 1900; ... woman Nobel Prize winner: shared her 1903 Nobel Prize in Physics with her husband Pierre Curie.
Description : Which of the following events occurred first? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Marconi first transmitted a wireless signal (4) Madame Marie Curie became the first woman Nobel Prize winner
Last Answer : (2) Max Planck unveiled the Quantum Theory Explanation: General Theory of Relativity: a theory of gravitation developed by Einstein in the years 1907-1915; Quantum Theory of Max Planck: 1900; ... transmission on December 11, 1901; and Madame Curie becoming the first woman Nobel Prize winner.
Description : Which of the following occurred first? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Guglielmo Marconi sent out the first wireless signals (4) Wright Brothers successfully flew an aircraft
Last Answer : (3) Guglielmo Marconi sent out the first wireless signals Explanation: Guglielmo Marconi sent out the first wireless signals. In the early summer of 1895 and despite an intervening hill, ... a gun. The theory of relativity transformed theoretical physics and astronomy during the 20th century.
Description : Which of the following events occurred first ? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Marconi first tranmitted a wireless signal (4) Madame Marie Curie became the first woman Nobel Prize winner
Last Answer : Max Planck unveiled the Quantum Theory
Description : Which of the following occurred first ? (1) Albert Einstein propounded the General Theory of Relativity (2) Max Planck unveiled the Quantum Theory (3) Guglielmo Marconi sent out the first wireless signals (4) Wright Brothers successfully flew an aircraft
Last Answer : Guglielmo Marconi sent out the first wireless signals
Description : Is it true that Albert Einstein didn't comb his hair?
Last Answer : He did have a, patent pending, home designed comb, but it wasn’t very useful, because, different from later models, his had the teeth standing up, rather than turned downwards.
Description : What do you believe that Albert Einstein meant by this quote?
Last Answer : He is saying that if you study science in earnest, you will see the laws of nature that governs our world, our universe and the lives of all things alive in our world are so complex, perfectly ... this great dynamic of the laws of nature is to leave yourself naive to this great reveal of science.
Description : What was the name of the Albert Einstein episode that just aired?
Last Answer : Could it have been Einstein’s Big Idea on Nova?
Description : More impressive that Albert Einstein?
Last Answer : No cause we all know even real magic is faked :)
Description : Before he turned physics upside down, a young Albert Einstein supposedly showed off his genius by devising a complex riddle involving a stolen exotic fish and a long list of suspects. Can you resist ... written by one of the smartest people in history? Dan Van der Vieren shows how. -Riddles
Last Answer : The key is that the person at the back of the line who can see everyone else's hats can use the words 'black' or 'white' to communicate some coded information. So what meaning can be assigned ... . And every time this happens, the next person in line will switch the parity they expect to see.
Description : When did Albert Einstein Predict the black hole with his theory of relativity? -Space
Last Answer : answer:
Description : what objects describe Albert Einstein?
Last Answer : 160 IQ question
Description : Answer: Albert Einstein.
Last Answer : What are the integers used to express the energy, posit, etc. of an electron?
Description : Albert Einstein is a citizen of which country ?
Last Answer : Albert Einstein is a German citizen.