Convert femtowatt to Btu (th)/second
Please provide values below to convert femtowatt [fW] to Btu (th)/second [Btu(th)/s], or Convert Btu (th)/second to femtowatt.
How to Convert Femtowatt to Btu (Th)/second
1 fW = 9.48451652677005e-19 Btu(th)/s
Example: convert 15 fW to Btu(th)/s:
15 fW = 15 × 9.48451652677005e-19 Btu(th)/s = 1.42267747901551e-17 Btu(th)/s
Femtowatt to Btu (Th)/second Conversion Table
| femtowatt | Btu (th)/second |
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Femtowatt
A femtowatt (fW) is a unit of power equal to 10^-15 watts, representing an extremely small amount of power.
History/Origin
The femtowatt was introduced as part of the SI prefixes to measure very small quantities of power, particularly in scientific and technological contexts, gaining recognition as the need to quantify minute power levels grew.
Current Use
Femtowatts are used in fields such as quantum physics, nanotechnology, and optical measurements, where precise measurement of extremely low power levels is required.
Btu (Th)/second
Btu (th)/second is a unit of power representing the rate of energy transfer, specifically one British thermal unit (th) per second.
History/Origin
The British thermal unit (th) has been used historically in the United States for measuring heat energy, and its use in power units like Btu (th)/s dates back to traditional energy and heat transfer calculations in engineering and thermodynamics.
Current Use
Btu (th)/second is primarily used in the United States for industrial and engineering applications involving heat transfer rates, although it is less common compared to SI units like watts.