9/11 study: Air traffic affects climate
Air temperatures where contrails form are generally lower than minus 40 degrees Fahrenheit (minus 40 degrees Celsius). Like natural cirrus clouds, contrails insulate the planet, blocking out incoming solar energy from above and keeping in heat down below.
Fahrenheit: Facts, History & Conversion Formulas
The Fahrenheit and Celsius scales converge at minus 40 F, so that minus 40 F and minus 40 C represent the same temperature. Fahrenheit has widely been replaced by Celsius in most countries and for most applications. In the late 1960s and 1970s, the Celsius ...
What happens when you blow bubbles when it's minus 49 degrees?
I’m feeling chill just watching them hang out in weather cold enough to instantly freeze soap bubbles. What’s that all aboot, eh? I should point out that when the temperature dips that low, Celsius and Fahrenheit line up. Well, at about minus 40 they ...
Supercool: Water doesn't have to freeze until -48 C (-55 F)
How and at what temperature water must freeze has more than just ... can cool it down well below 32 degrees Fahrenheit [zero Celsius] and it still remains a liquid," says Molinero. Liquid water as cold as minus 40 C (minus 40 F) has been found in clouds.
Water doesn't have to freeze until minus 55 Fahrenheit
But the property of water that "is most fascinating is that you can cool it down well below 32 degrees Fahrenheit and it still remains a liquid," says Molinero. Liquid water as cold as minus 40 F has been ... (or minus 48 degrees Celsius).