Re: Suspension losses

On Mon, 13 Jan 2025 14:33:13 -0500, Catrike Ryder
<Soloman@old.bikers.org> wrote:

On Mon, 13 Jan 2025 11:28:12 -0800, Jeff Liebermann <jeffl@cruzio.com>
wrote:
>

On Mon, 13 Jan 2025 08:57:18 -0500, zen cycle
<funkmasterxx@hotmail.com> wrote:
>

On 1/13/2025 2:01 AM, Jeff Liebermann wrote:

On Mon, 13 Jan 2025 13:20:04 +0700, John B. <slocombjb@gmail.com>
wrote:
 

But long before the days of transistors and "circuit boards" my folks
had an electric blanket... used it all the rest of their lives. Is the
modern one better?

 
Not really better, but certainly safer.  Electric heaters are all 100%
efficient.  Every watt you shove into the heating wires is turned into
heat.  There's no way to improve on 100% efficiency.

>
Nothing is 100% efficient

>
Well, the heater wires might radiate some EM radiation, which then is
absorbed by nearby objects and is converted to IR which adds to the
heat produced by the heater wires.  There might be some radiation at
other frequencies (RFI, EMI, microwaves, visible light, UV, etc) but
most of the radiation is ends up somewhere in the IR bands.
>
Incidentally, I'm usually amused at the advertising for electric
heaters all claiming that their more "efficient" than the competition.
Of course, no numbers and certainly no calculations are ever provided.

They could always do a study where they ask people which heater made
them feel warmer.

I've seen that in advertisements and ad agency generated "scientific"
studies.  Usually, the winner is the electric heater with a parabolic
reflector to concentrate the heat in a small area.  The dish is not a
true parabola.  If it were, such a heater could probably burn a hole
in whatever it's pointed at.  The local Costco store usually has a
working model on display when winter weather arrives.  I would walk
down the isle and instantly feel the heat. 
<https://www.homedepot.com/b/Heating-Venting-Cooling-Heaters-Space-Heaters/Dish/N-5yc1vZc4lhZ1z0wblh>







--
Jeff Liebermann                 jeffl@cruzio.com
PO Box 272      http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann      AE6KS    831-336-2558