How did the “infrared thermometer” come about?

Explanation:

NASA - created it

1899 - invented

The earliest infrared thermometer (IRT) was known as the disappearing-filament optical pyrometer. 1899, The first patent for disappearing-filament optical pyrometer: The first patent for the optical pryometer was granted to Morse in 1899.

NASA

Explanation:

An infrared thermometer is a thermometer which infers temperature from a portion of the thermal radiation sometimes called black-body radiation emitted by the object being measured. ... Infrared thermometers are a subset of devices known as "thermal radiation thermometers".

first it was savannah, then it was augusta, louisville, milledgeville, then atlanta.

i live in georgia.

-seth

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27