What are the advantages of using SF6 (sulfur hexafluoride) in circuit breakers?
Sulfur hexafluoride gas (SF6) gas properties
Why only sodium light is used in Newton ring?
What is the principle behind sodium test?
What is the function of sodium light?
Why do we use sodium light in Newton Ring?
Why is sodium light used in Newton rings?
What is the principle of sodium lamp?
Why sodium light is used in Newton ring?
Compare the salient features of mercury vapour lamp and sodium vapour lamp based on (i) lamp efficiency (ii) lumen output.
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