[time-nuts] Ultra low phase noise floor measurement system forRF devices.

Magnus Danielson cfmd at bredband.net
Sun Apr 1 10:54:13 EDT 2007


From: "Poul-Henning Kamp" <phk at phk.freebsd.dk>
Subject: Re: [time-nuts] Ultra low phase noise floor measurement system forRF devices.
Date: Sun, 01 Apr 2007 14:50:28 +0000
Message-ID: <54520.1175439028 at critter.freebsd.dk>

> In message <460FC34F.8070009 at erols.com>, Chuck Harris writes:
> 
> >It is no more, or less, arbitrary than the calorie, but it is a whole lot less
> >wierd than a calorie/hour, or a kilometer/hour for that matter.
> 
> You're right, BTU/h is just as arbitrary as the calorie, which is why
> the correct SI unit for energy is Joule, which the same as Watt*seconds.

It takes 4,18 kJ to raise one Litre of water one degree Kelvin.
Everybody knows that, no?

Cheers,
Magnus




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