"C" is an abbreviation for the Celsius temperature scale.
How It's Used
"The fact that the outermost region of the sun's atmosphere is at millions of degrees while the temperature of the underlying photosphere is only 6,000 kelvins (degrees C. above absolute zero) is quite nonintuitive. One would have expected a gradual cooling as one moves away from the central heat source."
"The capital [New Dehli] has sweltered under intense heat for weeks though, having endured temperatures of around 45C last week, dust storms and scattered rain brought some relief over the weekend. The new air-conditionedmetro has seen record numbers of passengers as travellers abandon buses, taxis and auto rickshaws."
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