2 ms·
My suspicion is that they are communicating at frequencies we can't modulate/demodulate yet. Look how short of a time it took us to get from KHz to GHz. Since
by dhimes 7y ago
My suspicion is that they are communicating at frequencies we can't modulate/demodulate yet. Look how short of a time it took us to get from KHz to GHz. Since there's a trade-off in that the higher the frequency- the more data can be transmitted in a given time, it makes sense that intelligent species would try to increase their transmission frequencies as a matter of course- like we did.
The downside trade-off is that transmissions become more and more strictly line-of-sight at higher frequencies.
- ddxxdd 7y agoWe can detect microwaves, infrared rays, light rays, ultraviolet rays, X-rays, and gamma rays. We might not be able to transmit and receive FM radio in those frequencies, but we are able to detect the presence, polarization, and direction of such radiation.
- dhimes 7y agoBut if you can't modulate or demodulate gamma rays (which is anything above a certain frequency), you can't even see if they are transmitting information or not. Even radio waves modulated with spread spectrum techniques look like noise. Who knows what we'll be using in the future.