As a subject matter expert in physics and mathematics, I can explain the term "2.2 K" in a scientific context.

"2.2 K" refers to a temperature measurement in kelvins. The Kelvin scale is an absolute temperature scale that starts at absolute zero, which is the lowest possible temperature where all classical motion of particles ceases. Unlike the Celsius scale, there are no negative values on the Kelvin scale. Each degree Kelvin is equivalent to one degree Celsius, but the scales start at different points.

To convert from Kelvin to Celsius, you subtract 273.15 from the Kelvin value. So, 2.2 K would be equivalent to -270.95 °C, which is extremely cold, just 2.2 degrees above absolute zero.

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If it is on vertical, the K under the steps stand for 1000's and does not mean kilometers. So if you had 2,200 steps it would say 2.2K for the step total as there is not enough room to display 2,200 on the vertical screen.read more >>