How's the weather?

joeyd999

Joined Jun 6, 2011
6,305
Man, have things changed in the last decade... check this out, I snapped it using an old Nokia flip-phone!
Yes. The colors and detail are even better than what I used to shoot with 35mm.

Which, speaking of, I learned a new trick. I can photograph my old negatives with my Samsung (laid out on a light box), and, using and app like Helmut, convert them to pretty good digitals. This is nice because I have 10's of thousands of negatives that I would never be able to afford to have converted. And I don't want to buy a reasonably good negative scanner.

Edit: I think only the old Kodachrome slide film rendered colors better.
 

Thread Starter

#12

Joined Nov 30, 2010
18,224
I think only the old Kodachrome slide film rendered colors better.
I shot a roll of Kodachrome 25 at Mt. Rushmore with a 400mm lens and a tripod.
I won a contest with one of those pics.;)
Nerdgasm.

ps, The heat index has been 93F for two days in a row. Summer is upon us. Two degrees hotter ( a few more days) and we'll start having summer thunderstorms.
 

Thread Starter

#12

Joined Nov 30, 2010
18,224
First 100 F. day scheduled here tomorrow. Spring is over.:(:(
I've been in Az. Every bit as hot as Fl but you aren't wet all the time.:D
In Az, sweating actually works.
Around here, we have drenching sweats, but all they accomplish is fungus and B.O.:(
 

ronv

Joined Nov 12, 2008
3,770
I've been in Az. Every bit as hot as Fl but you aren't wet all the time.:D
In Az, sweating actually works.
Around here, we have drenching sweats, but all they accomplish is fungus and B.O.:(
They lied to me about it being a dry heat.:eek: Around the 4th of July we get what they call the monsoon season. Nice big thunderstorms. The relative humidity doesn't get to high because it is so hot, so they measure it by dew point. The dew point is often 60 -65 degrees.
 

Thread Starter

#12

Joined Nov 30, 2010
18,224
The dew point is often 60 -65 degrees.
That's why "swamp coolers" work in Arizona. Run a fan across something soggy and you have 70 degree air.:cool:
Run a fan across something soggy in Florida and all you get is soggy air.:D
 

Dr.killjoy

Joined Apr 28, 2013
1,196
I've been in Az. Every bit as hot as Fl but you aren't wet all the time.:D
In Az, sweating actually works.
Around here, we have drenching sweats, but all they accomplish is fungus and B.O.:(
I have friends in Florida and I can't stand the humidity there..
 

joeyd999

Joined Jun 6, 2011
6,305
I have friends in Florida and I can't stand the humidity there..
Sorry, but 115° in July is still 115°. Humidity or not.

I occasionally visit Microchip for their Master's seminars. Walking around at night is like baking in an oven. And the pool water is so hot it doesn't cool you off.

Good thing there is usually plenty of beer.

In Florida, you can sit under a tree on a hot day. Leaning up against a cactus is not so comfortable...
 

Dr.killjoy

Joined Apr 28, 2013
1,196
Sorry, but 115° in July is still 115°. Humidity or not.

I occasionally visit Microchip for their Master's seminars. Walking around at night is like baking in an oven. And the pool water is so hot it doesn't cool you off.

Good thing there is usually plenty of beer.
I lived in AZ and the heat was not a problem there for me but humidity kills me in FL ..
 

cmartinez

Joined Jan 17, 2007
8,768
humid air is less dense than dry air.
I believe you, but I'm trying to understand why... I would've thought that water molecules (or, in most natural situations, micro-droplets) would displace air molecules (nitrogen and oxygen), therefore making humid air more dense (assuming equal temperatures in both cases)
What am I missing?
 

Thread Starter

#12

Joined Nov 30, 2010
18,224
The temperature is denser in humid air.
I too have squeezed my brains trying to visualize a situation in which that concept would apply
I can understand it. He's speaking from the human side of perception. I used to play all day in a dry cold called, "snow" but I was close to death after 45 minutes of being wet in 33F air.On the other end of that spectrum, I was changing spark plugs in Phoenix at 105 degrees and it was mildly irritating. I spent 90 minutes in a junk yard in Florida at 89F last week and I was all turning red and getting confused like the beginning of heat stroke. Wetter air makes the temperature seem more effective, regardless of whether it is too hot or too cold. "The temperature is denser (to human perception) in humid air."
 

joeyd999

Joined Jun 6, 2011
6,305
A water molecule has less mass than an oxygen or nitrogen molecule. And, no, vapor does not exist as "droplets", but as a gas. And they mix according to their partial pressures, up to the limit of saturated air at a given temperature.

This was in reply to cmartinez.
 
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