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

Animal genetics and breeding, POULTRY BREEDING Poultry breeding has acq...

POULTRY BREEDING Poultry breeding has acquired pre-eminence over all other domesticated livestock enterprises. Production level of layer and broiler type of chicken touched spe

Fossil history of horse, Evolution of Horse - Credit to Prof. C. Marsh...

Evolution of Horse - Credit to Prof. C. Marsh (1879) of Yale University for complete work.   S.No   Fo ssil/Genus   Period

Photosynthesis, photosynthesis moderates global warming, briefly explain th...

photosynthesis moderates global warming, briefly explain this statement

Echinoderm - circulatory and nervous system, Q. Echinoderm identity card. H...

Q. Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, respiratory

Types of mechanism - stress condition, Types of Mechanism - Stress Conditio...

Types of Mechanism - Stress Condition Plants have evolved a variety of mechanisms to withstand stress conditions. In many cases we can precisely define the way plants enable t

Explain adverse effects of emtricitabine, Explain Adverse effects of Emtric...

Explain Adverse effects of Emtricitabine  Emtricitabine can cause hyperpigmentation of the palms and soles, particularly in dark-skinned patients. Because emtricitabine is also

Define the healing process - root canal treatment, Define the Healing Proce...

Define the Healing Process - Root Canal Treatment The course of healing varies and depends on: 1)  Initial size of the lesion: It takes longer for larger periradicular lesio

How is carbon dioxide released by cellular respiration, How is carbon dioxi...

How is carbon dioxide released by cellular respiration transported from the tissues to be eliminated through the lungs? In vertebrates almost 70% of the carbon dioxide is trans

Economic significance - conservation of wildlife, Economic Significance - C...

Economic Significance - Conservation of Wildlife Certain wild species are important because of their actual or potential economic value to people. Wildlife resources provide p

Nutition in animals, describe each and every step in nutrition in animals?

describe each and every step in nutrition in animals?

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