Estimating the Boiling Point at Various Elevations
We can estimate the boiling point of water, accurate to the nearest tenth (one decimal point), by the formula:
y = 4.299969165*10^-8 * x^2 – 0.0035531324 * x + 100.0049216
x = elevation in meters
y = boiling point of water in degrees Celsius (°C)
This equation was derived using quadratic regression analysis of 27 sample points, testing points for elevations from -305 m to 6629 m.
If you are working with US units, you can use the following unit conversions:
1 ft = 0.3048 m
Conversion to Celsius: °C = (°F – 32) * 5/9
x = -152 m (approx. -498.687664 ft), y ≈ 100.5 °C
x = 4115 m (13500.65617 ft), y ≈ 86.1 °C
x = 6325 m (20751.31234 ft), y ≈ 79.3°
Glover, Thomas J. Pocket Ref 4th Edition. Sequoia Publishing, Inc. Littleton, CO. 2012
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