Wind Chill Chart
Dec 5, 2018 06:38:27 #
Wind chill only applies if you stand outside naked while sprayed with a garden hose.
It is an evaporative measure
It is an evaporative measure
Dec 5, 2018 06:41:58 #
Thank you for your service and for sharing the wind chill chart.
Dec 5, 2018 07:31:09 #
Steve Perry wrote:
Well said Steve. People do tend to mix up what wind chill is and how it affects us. Coming from Chicagoland in the '40s and '50s, I know what wind chill is all too well. Enough to know I don't willing go to the cold unless absolutely necessary!
Dec 5, 2018 07:48:56 #
Thanks for that new chart. It's good to be prepared.
On the other hand, I never liked the idea of "wind chill." When I watch a weather forecast, I want to know the actual temperature, not the interpolated temperature with the wind factored in. I don't like to hear "-5°" when the temperature is actually 15°. Wind isn't steady. It will be still one minute and blowing hard the next. I want the actual temperature. Anyone with even a bit of common sense knows that it's worse having wind on a cold day.
Because I never liked the artificiality of the wind chill temperature, I was sure that there would soon be a similar chart for summer weather. In 1978, George Winterling produced the Heat Index chart. Yes, the temperature is 88°, but it feels like 110°. I don't want to hear the weatherman telling me it's 110° when it isn't. As Joe Friday used to say, "Give me the facts, M'am, just the facts." The fact that the wind chill chart has changed shows that the temperatures being reported for all those years were wrong.
By the way, the wind chill factor does not affect things - just people and other animals. Water freezes at 32°F, regardless of wind chill.
On the other hand, I never liked the idea of "wind chill." When I watch a weather forecast, I want to know the actual temperature, not the interpolated temperature with the wind factored in. I don't like to hear "-5°" when the temperature is actually 15°. Wind isn't steady. It will be still one minute and blowing hard the next. I want the actual temperature. Anyone with even a bit of common sense knows that it's worse having wind on a cold day.
Because I never liked the artificiality of the wind chill temperature, I was sure that there would soon be a similar chart for summer weather. In 1978, George Winterling produced the Heat Index chart. Yes, the temperature is 88°, but it feels like 110°. I don't want to hear the weatherman telling me it's 110° when it isn't. As Joe Friday used to say, "Give me the facts, M'am, just the facts." The fact that the wind chill chart has changed shows that the temperatures being reported for all those years were wrong.
By the way, the wind chill factor does not affect things - just people and other animals. Water freezes at 32°F, regardless of wind chill.
Dec 5, 2018 08:04:37 #
Apaflo wrote:
So you think flesh can get colder than ambient? I... (show quote)
My TWO PhD's tell me that YOU are the shameful one here - your OPINION does not change REALITY nor the laws of PHYSICS. You must be a Dunning-Kruger poster child considering your personal OPINION that YOU are smarter than all the scientists in the world.
Considering that only 3.7% of the people in Barrow, AK have even an associates degree, and 5.5% have not even completed 9th grade, I'm not surprised that it's full of "self-proclaimed geniuses."
Dec 5, 2018 08:08:13 #
Steve Perry wrote:
Wind chill doesn't affect cameras, only people. While wind can help pull the heat from the camera, the camera itself will never be colder than the actual, ambient air temp. Wind chill is simply how it "feels" to a person, camera's don't care.
Dec 5, 2018 08:13:27 #
I guess I shouldn't be surprised people mistake wind chill with temperature...my wife still makes that mistake. If wind chill could drop an object's temperature below actual air temperature, your car's outside air temperature thermometer (if so equipped) should register different temperatures depending on the car's speed...but it won't. Regardless of the car's speed, which determines the speed of air flow over the thermometer, it'll never register anything lower than the actual air temperature even if the car hits 100 mph. Or for that matter, watch an outdoor thermometer as the wind picks up and drops...again, it'll stay at air temperature. At 35 degrees air temperature, a 15 mph wind creates a 25 degree wind chill. Put a glass of water outside under those conditions and it'll never freeze.
However, other than reduced battery capacity as mentioned, how else does extreme cold affect camera function? Since all the camera parts shrink somewhat due to the cold, does that effect moving parts? Shutter speed?
However, other than reduced battery capacity as mentioned, how else does extreme cold affect camera function? Since all the camera parts shrink somewhat due to the cold, does that effect moving parts? Shutter speed?
Dec 5, 2018 08:35:37 #
peterg
Loc: Santa Rosa, CA
Steve Perry wrote:
However, when I stop working, my camera stops working! Wind chill doesn't affect cameras, only people. While wind can help pull the heat from the camera, the camera itself will never be colder than the actual, ambient air temp. Wind chill is simply how it "feels" to a person, camera's don't care.
Dec 5, 2018 08:39:22 #
Steve Perry wrote:
Wind chill doesn't affect cameras, only people. While wind can help pull the heat from the camera, the camera itself will never be colder than the actual, ambient air temp. Wind chill is simply how it "feels" to a person, camera's don't care.
Exactly!
Dec 5, 2018 08:53:34 #
Steve Perry wrote:
Wind chill doesn't affect cameras, only people. While wind can help pull the heat from the camera, the camera itself will never be colder than the actual, ambient air temp. Wind chill is simply how it "feels" to a person, camera's don't care.
Dec 5, 2018 08:54:31 #
Gee if my posting about wind chill got this much interest maybe my next post should concern
why do we need to go to Mars.
why do we need to go to Mars.
Dec 5, 2018 08:58:06 #
peterg
Loc: Santa Rosa, CA
Pixelmaster wrote:
I just want to know what lens to take.Gee if my posting about wind chill got this much interest maybe my next post should concern
why do we need to go to Mars.
why do we need to go to Mars.
Dec 5, 2018 09:13:40 #
I lived in New York City when the additional information as to "discomfort" began to accompany the reporting of the current temperatures and weather forecasting. The meteorologists called it the "THI", that is,the Temperature/Humidity Index. Some announcers used the term "Discomfort Index". I suppose this pertained to heat as well as cold.
Another question for y'all scientists. One of my industrial clients is a meat packing company. I did some photography to illustrate their facilities to potential customers. In their plant there is a "BLAST FREEZER" where the ambient temperature is "freezing" enough, however, the process is accelerated by very powerful fans. Can I the assume that out-of-doors when the wind velocity is high the discomfort and chance of frostbite and hypothermia is exacerbated. Would this also affect lubricants in the camera? I remember hearing that oils used to lubricate shutters and analog wristwatches were made of whale oil- which is organic. Winterizing lubricants are synthetic- perhaps silicone based? So- is it possible that wind chill can indeed affect a camera, that is not specially lubricated, in a shorter length of exposure to the cold?
If one of you gentlemen can stop fighting and take the time out to answer this laymen's question, it would be appreciated. Thanks in advance!
Another question for y'all scientists. One of my industrial clients is a meat packing company. I did some photography to illustrate their facilities to potential customers. In their plant there is a "BLAST FREEZER" where the ambient temperature is "freezing" enough, however, the process is accelerated by very powerful fans. Can I the assume that out-of-doors when the wind velocity is high the discomfort and chance of frostbite and hypothermia is exacerbated. Would this also affect lubricants in the camera? I remember hearing that oils used to lubricate shutters and analog wristwatches were made of whale oil- which is organic. Winterizing lubricants are synthetic- perhaps silicone based? So- is it possible that wind chill can indeed affect a camera, that is not specially lubricated, in a shorter length of exposure to the cold?
If one of you gentlemen can stop fighting and take the time out to answer this laymen's question, it would be appreciated. Thanks in advance!
Dec 5, 2018 09:28:03 #
Shellback wrote:
Good post - a lot of folks don't realize how quickly wind chill can affect them.
In the '70's, I taught motorcycle safety at the Naval Air Technical Training Command, Memphis and incorporated wind chill charts in the class. Quite a few riders were not aware that at 50° and 50 mph they were susceptible to frost bite.
In the '70's, I taught motorcycle safety at the Naval Air Technical Training Command, Memphis and incorporated wind chill charts in the class. Quite a few riders were not aware that at 50° and 50 mph they were susceptible to frost bite.
Hmmmm...if the temp is not below freezing, frostbite can't occur.
Dec 5, 2018 09:30:44 #
Steve Perry wrote:
Wind chill doesn't affect cameras, only people. While wind can help pull the heat from the camera, the camera itself will never be colder than the actual, ambient air temp. Wind chill is simply how it "feels" to a person, camera's don't care.
You are absolutely correct. To put it in fewer words, wind chill only affects objects that are above ambient temperature.
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