59 posts • joined 8 Jul 2008
Re: Not just pictures; NO FOOTNOTES FOR YOU! ?
Funnily enough I'm just reading
A Tour Through the Whole Island of Great Britain (English Library)
Sold by Amazon Media EU S.à r.l.
and it does have footnotes. If you touch the footnote number a box pops up with the start of the footnote; touch 'go to footnotes' and it takes you to the full footnote, after reading the footnote touch the footnote number and it takes you back to the text.
First time I've come across this feature. It's very welcome and works well in this book.
BTW dodgy OCR is not limited to ebooks; I've often come across it in print books as well. -especially in new editions of old books.
Re: Feed the Vultures
In the past the Coop Bank was a prudent lender; AFAIK they weren't involved in a big way in the banking crisis. (Many years ago I asked for a loan to buy a car; despite being a customer since 1961 and in regular employment, they declined. Northern Rock made me the loan just like that!
If I understood the process correctly, what the receiver makes is a mirror image of the original. The top of the original is scanned and then destroyed by milling off one layer. This information is sent to the receiver which deposits the bottom layer of the recreated object. So what you get is a version of the original as seen reflected in a horizontal mirror.
Well, it is April 1st, ... but...
-the paper referred to looks real enough.
BUT, the small sample of subjects was drawn from university students who might be expected to have fairly high IQs. I wonder what the results would be if a larger sample more representative of the general population had been used
Despite a degree in physics I found transistor circuit theory impenetrable; all those h parameters etc.. Then I read an article in ETI which explained that the voltage gain of a common-collector amplifier stage was (40 x the dc voltage across the collector load resistor) as near as dammit. This was typical of their articles; the approach was to give a simple account or theory with the emphasis on actually getting on and building a circuit.
(BTW, wasn't one of their contributors obsessed with Felicity Kendal and mentioned her in almost every article?}
Other cassette systems.
Garrard in the UK -famous for turntables- developed a cassette system in the 60s. It was available for home constructors but few, if any, adopted it. IIRC It was based on conventional 5" reels held in an outer case and ran at 3 1/2 inches/second like the RCA system. At a college I worked at in the early 70s they used a system based on these machines to make recordings off air of educational programmes. Commercially it was too soon eclipsed bt the Philips Compact Cassette.
The Royal National Institute for the Blind also used their own-brand cassettes. These used four mono tracks on 1/4 inch tape running at 1 7/8 inches per second. They were used by the very extensive 'Talking Books for the Blind' library for many years.
I wonder if the power is transmitted by winding in a single kevlar thread from each of the large pulleys (the conical structures under the rotor hubs). These could be pre-wound with just enough thread to last the required minute of flight. The four threads could be wound onto the drums which are to be seen near the pedals. This would be a very light and simple system but of course could not operate continuously.
ISTR toy helicopters where you wound a string round the rotor shaft; when you pulled the string the rotor would jump up into the air.
Don't forget the collapsing can demonstration.
When the pressure in the test rig is reduced, atmospheric pressure will try to crush the container so it needs to be fairly strong.
BTW I liked the idea of taking it to the top of a building; the water only needs a head of about 10metres to give a pressure difference of 1 atmosphere.
Peak Programme Meters
Decades ago the BBC developed 'peak programme meters' to use in studios so that engineers could adjust levels to preserve the transient peaks in the music.
US broadcasters used 'volume level' meters which respond to average sound levels.Even in the 70s audio enthusiasts complained of over compressed music. The problem is that most music is heard in noisy environments where music with a wide dynamic range is inaudible during quiet passages. A serious listener in a quiet environment (eg in the concert hall or in a quiet living room with a good hi-fi system) can enjoy the wide dynamic range.
'...in my young days....hrrumph etc etc'
Somewhere I've got a book from the 1920s on 'wireless' (the big wooden box sort) with do-it-yourself instructions. -Make a resistor by drawing a line with a graphite pencil on a piece of dry smooth oak. - Soft pencil ;6B for low resistance, hard pencil 6H for high resistance. Make a microphone by stretching a paper diaphragm over the top of an empty cocoa tin and draw a line across it with a pencil. 'condensers' were made from layers of foil from chocolate bar wrapping separated by layers of waxed paper.
XP -> windows 7 -even more expensive than it looks
To upgrade from Xp you need first to 'upgrade' to Vista and then upgrade from Vista to 7.
(I'm talking of upgrading rather than a new installation) -I have a lot of app's on my machine that I've used for years and have lost the original install discs. In the case of 'EasyCad', which I use a lot, my original floppies have become unreadable. I KNOW it's always recommended to do a clean install of Windows and then install all the app's but in my case I can't see a way of doing this.