Weekly photo challenge: Inside

I didn’t want to take up this challenge – there seemed to be too many possible ideas impossible to convey in photo, like an egg yolk once seen is not inside any more. Then, two thoughts at once!!

I looked up from the sofa and saw this – its the view into the loft bedroom of my condo, from the living space sofa. It reminded me of one of the other meanings of “inside”.  Far too many people ‘inside’, far too many made criminal by ‘war’ on drugs, or illness post-war, mental health and education would be a better use of the money spent on more and more incarceration. But, I like these rails, they are not bars

Inside – the loft bedroom in the condo

Second thought – hard to find the photo

The Faraday Cage: In 1836, Michael Faraday observed that the charge on a charged conductor resided only on its exterior and had no influence on anything enclosed within it. To demonstrate this fact, he built a room coated with metal foil and allowed high-voltage discharges from an electrostatic generator to strike the outside of the room. Now the ‘cage’ is used e.g. for MRI scanning, and in numerous other applications like protecting electronics from unwanted fields. Google and find more, plus dozens of youtube videos of people inside them safe from electric shock. This picture is from Wikipedia.

I can’t locate Faraday’s diagram – wanted to take a photo of that, but thanks to Gutenberg, here is the paragraph where he reported his findings in the Transactions of the Royal Society, part of a long series, “Experimental Researches in Electricity” where 1174 is the paragraph number.

1174 I put a delicate gold-leaf electrometer within the cube, and then
charged the whole by an _outside_ communication, very strongly, for some
time together; but neither during the charge or after the discharge did the
electrometer or air within show the least signs of electricity. I charged
and discharged the whole arrangement in various ways, but in no case could
I obtain the least indication of an absolute charge; or of one by induction
in which the electricity of one kind had the smallest superiority in
quantity over the other. I went into the cube and lived in it, and using
lighted candles, electrometers, and all other tests of electrical states, I
could not find the least influence upon them, or indication of any thing
particular given by them, though all the time the outside of the cube was
powerfully charged, and large sparks and brushes were darting off from
every part of its outer surface. The conclusion I have come to is, that
non-conductors, as well as conductors, have never yet had an absolute and
independent charge of one electricity communicated to them, and that to all
appearance such a state of matter is impossible.

 

Detailed stuff, still in use and very relevant, sometime I must post what he said about photography , he was pretty impressed with it.

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