Photometer-radiation instrument, Biology

Assignment Help:

Photometer

Photometer (Figure shown below) measures the intensity of light. The metallic plate A is a photocell which emits electrons from its surface when light of sufficient frequency impinges Wpon it. The emission of electrons emerging from the irradiated surface constitute the current. This current is measured by a sensitive ammeter which is calibrated to give the amount of current generated as the value of light intensity in metre candle.

504_photometer.jpg


Related Discussions:- Photometer-radiation instrument

Active instruments-small occlusal, Active instruments -This category o...

Active instruments -This category of instruments actively engage a restorative , enabling a specific dislodgment force to potentially lift off the prosthesis -These devices

Concepts of epidemic disease and endemic disease, Q. What is the difference...

Q. What is the difference between the concepts of epidemic disease and endemic disease? The Endemic diseases are those that often affect people of a given place, many or few in

What would the result of a haploid egg, If a diploid sperm fertilized a hap...

If a diploid sperm fertilized a haploid egg, what would the result be? a.Haploid (n) b.Diploid (2n) c.A mixture of diploid (2n) and haploid (n) d.Triploid (3n)

Carbohydrate is an organic compound , The Carbohydrate sets are covalently ...

The Carbohydrate sets are covalently attached to various variant proteins to form glycoproteins. Carbohydrates are a shorter percentage of the weight of glycoproteins than of prote

Lungs - respiration, Lungs - Respiration Lungs can be simple, characte...

Lungs - Respiration Lungs can be simple, characterised by air exchange with surrounding environment by diffusion only. These are called the diffusion lungs and are present in

Find the magnitude of the acceleration, A proton accelerates from rest in a...

A proton accelerates from rest in a uniform electric field of 650 N/C. At some later time, its speed is 1.3 106 m/s. Find the magnitude of the acceleration of the proton. M/s2

Define criteria for assessment of riboflavin status, Define Criteria for As...

Define Criteria for Assessment of Riboflavin Status? Riboflavin status can be assessed by measuring urinary excretion of the vitamin in fasting, random, and 24-hour specimens o

Determines the concentration of cortisol in the blood plasma, If one determ...

If one determines the concentration of cortisol in the blood plasma to be 10 micrograms/mL and that in a 24 hour period a person excretes 10 mgs of cortisol, calculate the volume o

State diploblastic in brief, State Diploblastic in brief. Organisms for...

State Diploblastic in brief. Organisms formed from only two primitive cell layers- ectoderm and endoderm. Though there may be some type of a matrix between two cell layers, gen

How is heart contraction triggered, Q. How is heart contraction triggered? ...

Q. How is heart contraction triggered? Heart contraction is independent from neuronal stimulus although it can be modulated by the autonomous nervous system in the heart there

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