Chas Tennis
G.O.A.T.
Regarding light vs dark tennis clothes in the sun-
An IR thermometer with laser pointer on a bright sunny day, indicated -
1) On the shoulder of a white T shirt - 89° F.
2) On the belly of a black T shirt - 118° F.
Once you see this for yourself, you really understand that sun shine & clothing reflectivity is significant in hot weather.
This measurement was taken with an IR thermometer that has a laser to aim it. About $30-40. Very useful item to have around the house.
Considering that the body is cooling from about 98°. F. it surprised me that much of the trunk might be in cloth that was at 118° F.
[To get the symbol for degrees Google symbol for degrees & copy it. Or just copy my ° . ]
I had only one bad tennis heat experience with an afternoon match at 3:30 PM and temperature predicted at 93°F. Over a short time, I lost a lot of reaction time and speed. Felt different and weak. We all agreed to find shade for the changeover breaks.
I now use white long sleeve shirts and light colored pants in summer and black/dark long sleeves and & pants in the winter. Cos...Co tan full rimmed hat.
From wearing short sleeve shirts and no sunscreen for decades, I now have solar purpura on my arms. (solar skin damage with a tendency to form purple bruises easily). Others I have known have gotten skin cancer on the face. In one case, Melanoma.
Please make and post some similar measurements using an IR thermometer. It is easy to measure surface temperatures with this kind of an IR thermometer. Court surface. Air temperature is tricky. Probably a piece of aluminum foil painted black on one side (not facing the sun) would come to air temperature in a minute or so. Measure how the foil heats.
The players in the past wore light colored clothes that covered more of their arms and legs. That screened the sun and also would have reduce heating from sunshine.
Every coach or instructor should have one of these IR thermometers for educating themselves and their students or players.
An IR thermometer with laser pointer on a bright sunny day, indicated -
1) On the shoulder of a white T shirt - 89° F.
2) On the belly of a black T shirt - 118° F.
Once you see this for yourself, you really understand that sun shine & clothing reflectivity is significant in hot weather.
This measurement was taken with an IR thermometer that has a laser to aim it. About $30-40. Very useful item to have around the house.
Considering that the body is cooling from about 98°. F. it surprised me that much of the trunk might be in cloth that was at 118° F.
[To get the symbol for degrees Google symbol for degrees & copy it. Or just copy my ° . ]
I had only one bad tennis heat experience with an afternoon match at 3:30 PM and temperature predicted at 93°F. Over a short time, I lost a lot of reaction time and speed. Felt different and weak. We all agreed to find shade for the changeover breaks.
I now use white long sleeve shirts and light colored pants in summer and black/dark long sleeves and & pants in the winter. Cos...Co tan full rimmed hat.
From wearing short sleeve shirts and no sunscreen for decades, I now have solar purpura on my arms. (solar skin damage with a tendency to form purple bruises easily). Others I have known have gotten skin cancer on the face. In one case, Melanoma.
Please make and post some similar measurements using an IR thermometer. It is easy to measure surface temperatures with this kind of an IR thermometer. Court surface. Air temperature is tricky. Probably a piece of aluminum foil painted black on one side (not facing the sun) would come to air temperature in a minute or so. Measure how the foil heats.
The players in the past wore light colored clothes that covered more of their arms and legs. That screened the sun and also would have reduce heating from sunshine.
Every coach or instructor should have one of these IR thermometers for educating themselves and their students or players.
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