New Book of Rules
in [Design]
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From: Eeyore on 16 Aug 2006 11:13 John Woodgate wrote: > In message <gea6e2hulrq4nnsibqkodra1vpd0aq0jo1(a)4ax.com>, dated Wed, 16 > Aug 2006, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> > writes > >Mercedes are boring and ugly to boot. > > ....and European, of course. Buy a Rover! (;-) Are they making them in China now ? Graham
From: Eeyore on 16 Aug 2006 11:15 jasen wrote: > On 2006-08-15, John Woodgate <jmw(a)jmwa.demon.co.uk> wrote: > > In message <44E18508.E2558F08(a)REMOVETHIS.hotmail.com>, dated Tue, 15 Aug > > 2006, Eeyore <rabbitsfriendsandrelations(a)REMOVETHIS.hotmail.com> writes > > > >>LOL ! I can't do cube roots but I can do most dB calculations in my > >>head to a useful degree of accuracy. > > > > dBs are easy once you learn a few key facts, just like you need for > > adding and subtracting (like 'eight and five are thirteen'). > > > > For voltage or current: > > 1 dB = factor of 1.25 > > 3 dB = factor of 1.4 > > 5 dB = factor of root 10 = 3.2 > > 6 dB = factor of 2 > > 10 dB = factor of 3 > > eh? 5>10 ? 1dB's wrong too ! Tssk tssk ! Graham
From: Eeyore on 16 Aug 2006 11:21 John Woodgate wrote: > In message <ebutip$b8l$2(a)gonzo.homenet>, dated Wed, 16 Aug 2006, jasen > <jasen(a)free.net.nz> writes > >On 2006-08-15, John Woodgate <jmw(a)jmwa.demon.co.uk> wrote: > >> In message <44E18508.E2558F08(a)REMOVETHIS.hotmail.com>, dated Tue, 15 Aug > >> 2006, Eeyore <rabbitsfriendsandrelations(a)REMOVETHIS.hotmail.com> writes > >> > >>>LOL ! I can't do cube roots but I can do most dB calculations in my > >>>head to a useful degree of accuracy. > >> > >> dBs are easy once you learn a few key facts, just like you need for > >> adding and subtracting (like 'eight and five are thirteen'). > >> > >> For voltage or current: > >> 1 dB = factor of 1.25 > >> 3 dB = factor of 1.4 > >> 5 dB = factor of root 10 = 3.2 > >> 6 dB = factor of 2 > >> 10 dB = factor of 3 > > > >eh? 5>10 ? > > > > > Ah, you spotted the deliberate mistake! (You do believe me, don't you?) > 10 dB = factor of root 10 = 3.2 > 5 dB = factor of root 3.2 = 1.8 And 1 dB ??? ;~) Graham
From: John Larkin on 16 Aug 2006 11:56 On 16 Aug 2006 07:50:29 -0700, bill.sloman(a)ieee.org wrote: > >John Larkin wrote: >> On 15 Aug 2006 20:10:25 -0700, bill.sloman(a)ieee.org wrote: >> >> >What survivors? Asteroid impacts that have had the same sort of >> >consequences tend to kill off all the big, slow-breeding land animals - >> >everything heavier than a few kilograms. >> > >> >It takes a few million years before the small, fast-breeding stuff >> >evolves variants to fiill all the empty niches. >> >> So whales and elephants evolved from mice, in a few million years? I >> never knew that! > >Good thing too. It isn't true. For whales > >"The short answer is that the best available evidence is that whales >evolved >from a terrestrial ancestor that resembled a wolf or hyaena, only with >its >five toes ending in small hooves rather than claws. This ancestral >species >belonged to a group called the mesonychids, or was closely related to >them." > >For elephants > >"Subclass Eutheria >Among the orders emanating from the subclass Eutheria are three that >are closely related. > >Order Hyracoidea: >Modern descendants are the hyraxes. African rodent-like animals the >size of rabbits. > >Order Sirenia: >Modern descendants are manatees and dugongs (sea cows). Seal-like >mammals living entirely in water. > >Order Proboscidea: >The order of modern elephants" > >So it would seem the both evolved from something closer in size to a >rabbit than a mouse, > >The mouse is a relatively small rodent, so no more closely related to >elephants or whales than we are (and more closely related to us than >either). > >http://biology.plosjournals.org/perlserv?request=get-document&doi=10.1371/journal.pbio.0040111 But, I quote, >> >What survivors? Asteroid impacts that have had the same sort of >> >consequences tend to kill off all the big, slow-breeding land animals - >> >everything heavier than a few kilograms. >> >> >It takes a few million years before the small, fast-breeding stuff >> >evolves variants to fiill all the empty niches. >> John
From: John Larkin on 16 Aug 2006 11:58
On Wed, 16 Aug 2006 15:53:43 +0100, John Woodgate <jmw(a)jmwa.demon.co.uk> wrote: >In message <4ra6e2lpi7mtpk3n2pt6541ollphb267rm(a)4ax.com>, dated Wed, 16 >Aug 2006, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> >writes >>On 15 Aug 2006 20:10:25 -0700, bill.sloman(a)ieee.org wrote: >> >>>What survivors? Asteroid impacts that have had the same sort of >>>consequences tend to kill off all the big, slow-breeding land animals - >>>everything heavier than a few kilograms. >>> >>>It takes a few million years before the small, fast-breeding stuff >>>evolves variants to fiill all the empty niches. >> >>So whales and elephants evolved from mice, in a few million years? I >>never knew that! >> >Not exactly mice, more like shrews. Google for 'Morganucodon'. Before >whales went back into the sea, they were rather like dogs, and seals >were very like dogs. Elephants were rather like 'rock rabbits', Hyrax, >until they grew up. Google again. But asteroids killed off all the things like dogs. Sloman told me so. John |