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Precautions : The following precautions should be taken while using UV lamps:
1) TJV lamps must always be properly shielded.
2)Wear approved goggles when working with or close to the source.
3) As a minimum precaution, view through pyrex glass as this material absorbs UV light and is thus largely opaque to radiation of this wavelength.
4) Protect your skin with thick cloth or by suitable barrier cream if necessary.
5 ) Ensure good ventilation to guard against the dangers of inhaling ozone, which can be produced by the effect of UV on the oxygen in the air.
Softening water with chemicals Try making suds with a half test tube of hard water and a few drops of soap solution. Next boil a same sample and again try to make suds by usin
how is the soil colloidal material look like when ion and cation exchange capacity of the soil?
Tuning in on the Stars: The fact that stars emit radiowaves was discovered accidentally in 1932 by a young engineer Karl Jansky. He was trying to find the source of noise
Why does marble rarely contain fossils? This is due to of the way that it is formed. When you have a rock that is formed bymetamorphosis then it has been created by heat and pres
adaptations of roundworms
To show the differences in soil particles Secure some glass jars that hold about half Gallon or two litres of water. Place various handfuls of soil in a jar. Fill the jar with
Dissecting simple flowers Label each of five cards or pieces of White paper with one of the following words: stamens, pistil, petals,sepals, receptacle . Dissect a flower ca
Advantages of water in chemical weathering Water is an essential factor of chemical weathering and when it contains dissolved salts and acids it is all the more effective. It
describe the factors which decide the broad area of scientific activity
Explain the Objectives of amino acid and nucleotide metabolis ? Here you will be able to: 1. explain how amino acids are catabolized in the body, 2. describe the synthesis of u
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