I found this blog on the ESA website describing the how they communicate to the Rosetta spacecraft, Tracking Rosetta and thought it might be of interest.
I find it amazing how they manage to work with such a weak signal, -225.69 dBW or 2.7E-23 W by the time it reaches earth and just 1,83 femptowatts after collection by a 35m diameter antenna! I like the comparison with mobile phone signal levels. Sounds like I could do with one of those cryo-cooled low noise amps to improve my mobile phone reception up here on top of the hill!
WTF is a femptowatt!! Far too small for me to contemplate.
I can’t event get decent mobile reception if I move from one room to the other in my house.
Excellent. Now I understand.
So 1 donkeypower* = 250,000,000,000,000,000 femtowatts.
All makes sense now 🙂
* Wikipedia defines 1 Donkeypower as 250 watts, if you don’t believe me!
I am glad you clarified that as I was beginning to think you where boasting!!!!
I’m loving this.
Tej, I think this is good source material for sci-fi characters’ names! Zeptowatt vs Yottawatt in Power to the Power of 21!
I think George Lucas already took a couple of those with a slight modding! Andy, you’re the master of wordplay, I bet you would have come up with even better names!
Actually, there’s an endless scope for us to contribute more to the scientific community, surely? <span style=”font-size: 13px;”> Prepare to groan guys…</span>
10!27 WW – whatawatt
10!-27 wW – wizzowatt
10!30 – SW – somewatt
10!-30 – sW – sowatt
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