Comment Re:A few things : (Score 1) 323
ShooterNeo,
Thank you for posting a concise description of the transfer of energy.
Your last paragraph describing a butane/gasoline combustion chamber is the model of a hand/body-part warmer I purchased three decades ago. It used common cigarette lighter fuel and a rather complex method of steel on flint to ignite the chamber which is now subject to "child-protection" locks on your favorite brand of BIC lighters.. The spare "pint" of fuel could also be used as an emergency flair should one want to be noticed by airborne rescue.
The heat-generating jacket might not be desirable in a hostile military situation negating fears of the projectile passing the Kelvar protected lithium through ones body.
Many have denigrated cotton in this thread as retaining water in the form of sweat. If I recall correctly, scuba divers rely on water *inside* their wet-suits to keep them warm.
Even when the temperature is mid-eighty (F,) I find myself chilled and confronted by a cotton towel,
Motorcycles have also been mentioned. In my opinion, they are inexperienced as riding in the slip-stream of a large truck greatly reduces the need for special clothing; the wind being nil and the heat generated by the truck sufficient for warmth. Of course, riding five to ten feet behind a truck is not for the inexperienced or the faint of heart.
Back to the article posted. I have never been a fan of those sleeveless jackets. While they do provide protection against upper respiratory infraction, the human body vacates heat in the feet, head and hands, in that order: When I sleep and feel an elevated temperature, I expose my feet to the open air to regulate my body temperature. When the ambient temperature is mid-ninety, placing my feet in 30,000 gallons of eighty degree water is sufficient to adjust my body temperature. Your mileage may vary.
I own three Eddie Bauer Coats; the eldest dating back three decades. It cost $US300. The most recent is a decade old. They each have their temperature range and buoyancy. When I inquired about obtaining a new "hood," the manager told me that he did not have *any* coat in my knee-length style which brought *envy* to everyone in the store. So I bought a knit cap.
114 degrees unregulated can cause damage if left unchecked. Methinks the article meant to say that 114 degrees might compensate for the differential of 98.6F and -40C.
Someone in this thread mentioned dropping in water. A friend of mine did that (Navy Trained) and drowned trying to save his dog on an ice floe. The first thing I would pitch in freezing water is *anything* that might hold me down; coat (electric or otherwise,) shoes (My Timberland boots have served me well) and the twenty pounds of Exide batteries.
The EB Goose Down does provide minimal flotation. ScotchGuard provides a few extra seconds, but I am not willing to be dropped into a crevice of a glacier to test the speculation.
For those who are interested, an AC (Alternating Current) blanket disturbs my sleep, and NO it does not "buzz" or make any noises.
Bob
Thank you for posting a concise description of the transfer of energy.
Your last paragraph describing a butane/gasoline combustion chamber is the model of a hand/body-part warmer I purchased three decades ago. It used common cigarette lighter fuel and a rather complex method of steel on flint to ignite the chamber which is now subject to "child-protection" locks on your favorite brand of BIC lighters.. The spare "pint" of fuel could also be used as an emergency flair should one want to be noticed by airborne rescue.
The heat-generating jacket might not be desirable in a hostile military situation negating fears of the projectile passing the Kelvar protected lithium through ones body.
Many have denigrated cotton in this thread as retaining water in the form of sweat. If I recall correctly, scuba divers rely on water *inside* their wet-suits to keep them warm.
Even when the temperature is mid-eighty (F,) I find myself chilled and confronted by a cotton towel,
Motorcycles have also been mentioned. In my opinion, they are inexperienced as riding in the slip-stream of a large truck greatly reduces the need for special clothing; the wind being nil and the heat generated by the truck sufficient for warmth. Of course, riding five to ten feet behind a truck is not for the inexperienced or the faint of heart.
Back to the article posted. I have never been a fan of those sleeveless jackets. While they do provide protection against upper respiratory infraction, the human body vacates heat in the feet, head and hands, in that order: When I sleep and feel an elevated temperature, I expose my feet to the open air to regulate my body temperature. When the ambient temperature is mid-ninety, placing my feet in 30,000 gallons of eighty degree water is sufficient to adjust my body temperature. Your mileage may vary.
I own three Eddie Bauer Coats; the eldest dating back three decades. It cost $US300. The most recent is a decade old. They each have their temperature range and buoyancy. When I inquired about obtaining a new "hood," the manager told me that he did not have *any* coat in my knee-length style which brought *envy* to everyone in the store. So I bought a knit cap.
114 degrees unregulated can cause damage if left unchecked. Methinks the article meant to say that 114 degrees might compensate for the differential of 98.6F and -40C.
Someone in this thread mentioned dropping in water. A friend of mine did that (Navy Trained) and drowned trying to save his dog on an ice floe. The first thing I would pitch in freezing water is *anything* that might hold me down; coat (electric or otherwise,) shoes (My Timberland boots have served me well) and the twenty pounds of Exide batteries.
The EB Goose Down does provide minimal flotation. ScotchGuard provides a few extra seconds, but I am not willing to be dropped into a crevice of a glacier to test the speculation.
For those who are interested, an AC (Alternating Current) blanket disturbs my sleep, and NO it does not "buzz" or make any noises.
Bob
