Re: [Phys-l] Water vapor condensation

[Bernard Cleyet <bernardcleyet@redshift.com>]

One of the experiments in the sophomore lab at UCSB (ca. 1956) was to find the dew point.  The app. was a container of ethyl ether, one side highly polished (chrome plated?).  Air was bubbled and the thermometer read when condensation noted using a short focus telescope.

For the student's experiment a variably powered thermoelectric cooling plate would be suitable.

bc, nostalgist with poor memory.

perhaps this one  Alluard

http://www.humboldt.edu/~scimus/Instruments/AlluardHygr/Welch_Inst

or  Casella?  (I found no pic.)




On 2010, Jul 02, , at 06:55, Michael Edmiston wrote:

>  If the temperature of the cold object is lower than the 
> dew point then water vapor will condense on it fairly rapidly (also 
> depending on air movement).