Thread 16690743 - /sci/ [Archived: 1186 hours ago]

Anonymous
6/7/2025, 4:45:09 AM No.16690743
TXandRX
TXandRX
md5: 8a29bc2ed050067b1b6c180c7a3d1eeb๐Ÿ”
If two antennas each radiate 1 watt, how can their waves cancel in a direction โ€” doesnโ€™t that mean energy is lost?
Replies: >>16691087 >>16691091 >>16691145
Anonymous
6/7/2025, 2:18:09 PM No.16691087
Waventerference
Waventerference
md5: a58a2b1d8a2111c8576c271277ced317๐Ÿ”
>>16690743 (OP)
>their waves cancel
Afaik multiple interacting waves produce interference, not cancellation.
Anonymous
6/7/2025, 2:24:42 PM No.16691091
>>16690743 (OP)
>doesnโ€™t that mean energy is lost?
You will find that the waves reinforce each other along a different direction to account for the cancelled energy.
Replies: >>16693217
Anonymous
6/7/2025, 3:11:27 PM No.16691145
>>16690743 (OP)
loss of modulated signal not loss of energy
Replies: >>16693217
Anonymous
6/9/2025, 10:59:43 AM No.16693217
>>16691091
what if they are horn antennas facing each other? where would you get constructive interference?
>>16691145
where does the energy go, Sparky?
Replies: >>16693323 >>16695154
Anonymous
6/9/2025, 1:54:47 PM No.16693323
>>16693217
>where does the energy go,
as you've been shown the energy remains constant. its just that some peaks are reinforced while others are weakened.
Anonymous
6/11/2025, 6:23:15 AM No.16694892
Thanks, this is ok.

Still, it feels counter-intuitive.
Anonymous
6/11/2025, 1:06:36 PM No.16695071
Reminder that energy is not conserved due to the curvature of space
Replies: >>16695099
Anonymous
6/11/2025, 2:10:54 PM No.16695099
>>16695071
energy conservation is the strongest conservation law out there. it's baked into thermodynamics, and to reject it is to be in the company of perpetual motion device schizos. though, i will grant that there is an even stronger conservation law. that would be your idiocy.
Anonymous
6/11/2025, 3:47:22 PM No.16695154
Phased_array_animation_with_arrow_10frames_371x400px_100ms
>>16693217
>constructive interference
https://en.wikipedia.org/wiki/Phased_array