Account for refraction in hidden height

[DaveGreasley]

Should you not be accounting for refraction when calculating the hidden height? This is explained by Andrew Young here:

https://aty.sdsu.edu/explain/atmos_refr/horizon.html
https://aty.sdsu.edu/explain/atmos_refr/bending.html

If you aren't going to include this in the calculation then you at least need to state so clearly on the calculator page.

[Jimmyjimjimjim]

I agree. Perhaps you could add language explaining that observations in the "real world" may differ from these results because of refraction.
I do note that you have the assumption stated that light is traveling in a straight line, but it would help if this were made more clearly.