The relatively cool dark regions have temperatures of
thousands of degrees Celsius, in contrast to the bright glowing gas flowing around the sunspots, which have a temperature of over one million degrees Celsius.
The front end has a plasma torch that gets up to many
thousands of degrees Celsius, as hot as the sun's surface.
This is primarily because light bulb filaments must be extremely hot —
thousands of degrees Celsius — in order to glow in the visible range and micro-scale metal wires can not withstand such temperatures.
Not exact matches
But curbing those substances, scientists and activists say, could slow atmospheric warming 0.5
degrees Celsius by 2050 while also increasing crop yields and preventing hundreds
of thousands of related deaths from respiratory and cardiovascular diseases.
Although the era Secord and his colleagues studied experienced a similar increase in temperatures (five
degrees Celsius or more) as is predicted for us for the near future (four
degrees C), he points out the ancient animals had tens
of thousands of years to adapt to changing temperatures — rather than just centuries.
An analysis
of 27 states found that, on average, summer emissions
of sulfur dioxide (SO2), nitrogen oxides (NOx) and carbon dioxide (CO2) go up by hundreds to
thousands of metric tons per
degree Celsius increase.
In the next 50 years, even the lower limit
of impending climate change — an additional global mean warming
of 1
degree Celsius above the last decade — is far beyond the range
of climate variability experienced during the past
thousand years and poses global problems in planning for and adapting to it.
One
degree celsius might not sound like a big increase in temperature, but it's the difference between life and death for
thousands of people.
«Snyder said if climate factors are the same as in the past — and that's a big if,» AP noted, «Earth is already committed to another 7
degrees or so (about 4
degrees Celsius)
of warming over the next few
thousand years.»