Thermal detectors method of detection of ultrasonic waves, Physics

Assignment Help:

Explain the thermal detectors method of detection of ultrasonic waves.

Thermal detectors method:

It is the most generally used method of detection of ultrasonic waves. In this method, a fine platinum wire is utilized. That wire is moved by the medium. At the position of nodes, due to alternate compressions ad rarefactions, adiabatic changes in temperature takes place. The resistance of the platinum wire changes according to time. It can be detected with the help of Callendar and Garrifith’s bridge arrangement. At that position of the antinodes, the temperature as stayed constant. It will be indicated by the undisturbed balanced position of the bridge.


Related Discussions:- Thermal detectors method of detection of ultrasonic waves

Physics, A train consists of a 4300-kg locomotive pulling two loaded boxcar...

A train consists of a 4300-kg locomotive pulling two loaded boxcars. The first boxcar has a mass of 12,700 kg and the second has a mass of 16,300 kg. Presume that the boxcar wheels

Evaluate the least thickness for ordinary ray, A Plane polarized light...

A Plane polarized light is incident on a piece of quartz cut parallel to its axis. Evaluate the least thickness for which ordinary ray and extraordinary ray combine

radioactive substance, A certain radioactive substance has a half-life of ...

A certain radioactive substance has a half-life of 40 minutes. How much of an original 100 grams substance will remain after 2 hours? solution) m= m0/2t/T m=100 gms.. t=2 hours

Triode as an amplifiers, Amplifier is a functioning by which the amplitude ...

Amplifier is a functioning by which the amplitude of variation of ac signal voltage / current/ power can be enhanced (i) Principle and circuit diagram: The amplifying action of

Calculate the emission rate from the stove, 1.Consider the dangers of using...

1.Consider the dangers of using a camp stove inside an enclosed space like a tent. Test data show that a high heat liquid fuel camp stove can dramatically increase CO mixing ratios

Where the refraction does occurs, A ray of light itinerant in air passes th...

A ray of light itinerant in air passes through a flat plate of glass. Refraction takes place. Where the refraction does occurs? Ans: Refraction takes places when light tra

Construction and working of nicol prism, Briefly explain with principle, th...

Briefly explain with principle, the construction and working of Nicol prism. Why the angle of incidence on Nicol prism would be around 14 o .

What is the velocity of the train, A train moving with a velocity of 51 m/s...

A train moving with a velocity of 51 m/s east undergoes an acceleration of -2.3 m/s 2 as it approaches a town. What is the velocity of the train 5.2 s after it has begun to decele

Faraday''s laws of electrolysis, Faraday's laws of electrolysis (M. Faraday...

Faraday's laws of electrolysis (M. Faraday) Faraday's first law of electrolysis                    At time of electrolysis the amount of chemical change is proportion

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd