Is this'OU'?

[NerzhDishual]

Hi Guys,

Just a question please...
Lets supposes:

1) A 'WT' watts (old fashioned) AM radio transmitter.

2) 'n' AM (old fashioned too) radio receivers enthusiasts.
They only use galena receivers with an headphones/headset
and no power supply. They each collect 'wr' energy.

Question: will the transmitter be overloaded/depleted/exhausted
by the number of the receivers?

You can do some maths:
How much energy does it need to activate an headphones/headset? = wr

How much energy does it need to run a transmitter? = WT
With a few watts 'citizen band' set I could talk, From France,
with local pals and also, sometimes, with Italian and even US Guys.
So, WT seems not to be an issue.

Now?
Could wr * n > WT?
IMHO, it is possible, as you can increase 'n' at will..
Can you not?

Best

[armagdn03]

Ha ha ha ha ha, excellent post, good question, and keep following that train of thought

[pese]

Hi Guys,

Just a question please...
Lets supposes:

1) A 'WT' watts (old fashioned) AM radio transmitter.

2) 'n' AM (old fashioned too) radio receivers enthusiasts.
They only use galena receivers with an headphones/headset
and no power supply. They each collect 'wr' energy.

Question: will the transmitter be overloaded/depleted/exhausted
by the number of the receivers?

You can do some maths:
How much energy does it need to activate an headphones/headset? = wr

How much energy does it need to run a transmitter? = WT
With a few watts 'citizen band' set I could talk, From France,
with local pals and also, sometimes, with Italian and even US Guys.
So, WT seems not to be an issue.

Now?
Could wr * n > WT?
IMHO, it is possible, as you can increase 'n' at will..
Can you not?

Best

Yes ,
An receiver will take some mycro-watt from the transmitted energy.

But most AM radio station Transmitters have output power in 100 Kilo-watt Ranges.

I have also think about this question /40 years ago) and test out this
(professionally)


Gustav Pese

[greendoor]

Conservative physics would calculate that a transmitter of X watts can only supply power to a finite number of crystal-set recievers driving headphones to a maximum total power not exceeding X watts.

However - the 1st law of thermodynamics is basically a circular reasoning that is frequently used out of context because the alternative is too hard.  (You can't have your pudding if you don't eat your meat; how can you have your pudding if you don't eat your meat?)

The principle here is resonance.  It's well known that a tuning fork can excite string instruments that are tuned to the exact same note.  It would be very interesting to see how many strings can be excited by the same tuning fork ... could a single tuning fork excite 1000 strings?  How about 10,000 strings?  What would the total volume be, and would it display more power than was input into the tuning fork?  It would be hard to prove - because mere milliwatts can make a lot of sound ...

Perhaps a better experiment involving greater power transfer could be arranged ...

I suspect the big assumption here is that we are considering a Closed system ... IMO neither system (radio transmission or acoustic resonance) is Closed.  There is plenty of opportunity for external energy to apply ...

I consider that a wave is alternating compression & rarifaction of the air or aether - and when you have a rarefaction the universe tends to want to fill that void ... who is to say that when you establish a resonant power transfer that more power can't get sucked into the receiver than is actually transmitted in the first place ...

Experiment is the only way to find out - not circular reasoning ...

[pese]

in 1936 Berlin . lomg wave transmitter "Deutschlandfunk"
was tapped from people from an Garden landare that was direcly under the transmitter.
they have tapped with own antennas, the transiter and illuminate the gardens with some hudred
bulbs (lamps) 
afte some month this was "forbidden" , becaus the power comes from transmittr AND this part
"stolen" powe can not reach the world ?

Gustav Pese

Ref: Radio-Books from: Richter
(the first Autor 1940-1960