Quote:
Originally Posted by ITD
You can disagree all you want, but 800 watts is 800 watts. You'll be warmer if you move your resistive heater closer to you. They are not efficient ways to heat your home.
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The infrared heater is not designed to heat one's home. It's designed to efficiently heat one or more individuals. (And any local errant objects that can retain IR heat).
You leave the comfort of your infrared heater and hurry to put another log on the fire.
Quote:
Originally Posted by John Mercier
Why would it ''age'' your skin?
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At the bottom of the supplied link, this conclusion:
Quote:
Heat induces oxidative DNA damage in human skin in vivo
UV radiation is absorbed directly by DNA and leads to the formation of pyrimidine dimers, of which more than 75% are thymine dimers (Patrick, 1977). UV radiation produces ROS. DNA is also susceptible to oxidative damage, and 8-oxo-dG is a useful biomarker of oxidative damage in DNA (Pelle et al., 2003). As heat shock in human skin can produce ROS, we investigated the effects of heat shock on DNA damage in human skin in vivo.
Interestingly, heat shock at 43°C for 90 minutes, like UV irradiation, increased the 8-oxo-dG in the epidermis and dermis of human skin in vivo maximally at 24 hours post-heat (Figure 1a). However, heat shock, unlike UV, did not produce thymidine dimer formation (Figure 1b).
Therefore, heat-induced ROS induce cumulative DNA damage through oxidative damage.
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Like
UV radiation,
IR-radiated heat induces aging of exposed skin. (According to this study).
(
ROS=reactive oxygen species).
Like most papers at
Elsevier, the link is "heavy reading"--and IR skin damage is still being studied.
