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Edison brought a "tasimeter" he designed to detect heat at a distance to Wyoming, but it ended up not working well.

James Craig Watson was a professor who hoped to discover a new planet; the astronomer Maria Mitchell was determined to prove that women belonged in the science world; and Thomas Edison, a young inventor at the time, wanted to test his tasimeter, a device that measured infrared radiation, and buff his credentials.

Edison brought one of his devices, a tasimeter, to measure minute shifts in heat from the Sun's corona during the eclipse.

It wasn't until around 1940 that physicists Walter Grotrian, Bengt Edlén and Hannes Alfvén found the solar corona to have a temperature of at least 1 million °C. Had the tasimeter worked, the scattering of sunlight that we see as the inner corona would have misleadingly given Edison the Sun's surface temperature, 6,000 °C.

But he brings with him a new invention, the Tasimeter, which measures infrared radiation or heat.