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

J-shaped growth curve, J-shape d - It shows 2 phases - (i) Lay ph...

J-shape d - It shows 2 phases - (i) Lay phase (ii) Exponential phase

Why concentration of atp is maintained in the cells, A 70-kg adult person c...

A 70-kg adult person could meet all of his/her entire energy needs for one day by consuming 3 moles of glucose (540 g)- not a highly recommended diet!. Each molecule of glucose gen

Why some trees lose their green color in the autumn, Q. Why some trees lose...

Q. Why some trees lose their green color in the autumn? In autumn nights longer and days become shorter thus there is a reduction of the photosynthesis rate and some plants pre

What is sympatric isolation, A few individuals from a herd of deer are forc...

A few individuals from a herd of deer are forced to migrate to a new herd. This is an example of  resulting in.   a.  Gene flow; enhance in similarities between populations.

What is the probability of two individuals, What is the probability of two ...

What is the probability of two individuals (AaBBccDd and aaBbCcDd) having a child with the following genotype AaBBCcDD?

Determine the interactions among the splicing machinery, Which of the follo...

Which of the following mediates the interactions among the splicing machinery and the mRNA transcript? A. Alpha helical structures within the RNA binding domain of the splicing

Role of private sector in health care - competition, Role of Private Sector...

Role of Private Sector in Health Care - Competition When the private sector is driven by competition it tends to be more efficient. With competition, benefits like cost reduct

Binding site, Binding site  is the place on cellular DNA to which a protein...

Binding site  is the place on cellular DNA to which a protein (like transcription factor) can bind. Typically, binding sites may be found in the vicinity of genes, and would be inv

What are the multiple alleles, What are the multiple alleles? is there domi...

What are the multiple alleles? is there dominance in multiple alleles? The Multiple alleles is the phenomenon in which the similar gene has more than two different alleles (in

Determine the bioavailability of minerals, Bioavailability of Minerals ...

Bioavailability of Minerals It is well known that the concentration of a nutrient in a food is not a reliable indicator of its nutritional value. In other words, the entire qua

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