Re: The YouTube thread [2]

[halfwise]

That one's really interesting and edgy, never seen it before.

The top artists always refer back and know what's come before. Jazz musicians can play back improvised solos from recordings decades ago - it's part of learning the craft. I think Michael Jackson's dance moves are based solidly on the classics, especially Sammy Davis Jr. But now MJ is considered classic.

[Mrs Figg]

possibly the most adorable thing ever. (starts off a bit sad but not to worry)

[chris63]

Famous street in England.

[halfwise]

That made me drowsy.

[azriel]

[halfwise]

That girl can bounce!

I know it's not olympics, but the gymnastics are the only part of the Olympics I really care about.  I'm pretty ho-hum about a fast runner, but the floor show and uneven bars especially just grabs me.

[azriel]

possibly the most adorable thing ever.   (starts off a bit sad but not to worry)

Didnt take me long to start blubbing ! I put off watching this as I knew Id grizzle. He's so sweet ! Dear little thing. And before someone says about Foxes killing chickens & pet rabbits, yes, I know it goes on but, how I feel is..........

[chris63]

So much change in a 100 years. Makes you wonder what it will look like a 100 years from now.

[chris63]

For Blade runner fans.





Can't imagine Dustin Hoffman as Blade runner.

[halfwise]

Wasn't planning to spend nearly an hour watching, but those sucked me right in.

[azriel]

I love old films from years ago that have been colourised. Once they step out from the black & white they become real to me & I can feel something for them, whether its love or hate but its always with wanting to know more. These children, what was their life like ? Did they grow up & live a long life ?

[chris63]

And not one of those kids had a phone in their hand. How did they amuse themselves?

[halfwise]

I was taken by the ice skaters. These days when someone straps on some skates they feel like they have to behave differently - zoom and swoop around. But those people, you could hardly tell they had skates: just strolling around and chatting as nonchalantly as in a grassy park.

[azriel]

I loved the double decker train at 6.57 odd & further on in that film, you just see an umbrella sneak in from the left & nudge a boy out of the way

[halfwise]

Those blade runner videos didn't last long. Glad I watched them when I could.

[chris63]

I just noticed that.

[chris63]

Always brings tears to my eyes seeing their reactions. So happy for them.

[Mrs Figg]

I know, I love those videos

[halfwise]

Had to look up how they work.  We all have red, green and blue receptors, each responsive to a range of wavelengths centered on those colors.  These ranges overlap somewhat with the neighboring range so that intermediate colors like yellow are seen by the mix of red and green.   What happens with some types of colorblindness is the red and green receptors overlap so much that they almost can't be told apart.  So the glasses block a band in between, causing separation.  

Of course if you have a pure wavelength that falls in this band (like yellow) it would look black.  But most "colors" are actually broad, and so in cases like yellow or blue-green, you can lose the central wavelength and still get the same impression: equal amounts of green and red are seen, so it looks yellow.

I'd say for such a simple technique the glasses are wildly overpriced at $450 or so.  They get away with it because the effects are so striking.  But they could sell even more at a quarter that price for non prescription, and add the cost of prescription lenses if needed.

Sort of remarkable it took so long for such a simple idea to be figured out, so I guess the inventor deserves to clean up for a bit, but I call it price gouging. They should drop the price so that everyone who needs it can get one, make a lot more people happy and still make the same toal profit.

[Mrs Figg]

why do they look like sunglasses, cant they have clear lenses?

[halfwise]

The mode of operation is to block out part of the light to produce separation between red and green.  Maybe 20%?   I would think they'd have a bluish tint (white minus yellow), but not as dark as they look.  Freeze it at 3 seconds, you can see the blue as it's held up against the white wall.

(I'm now seeing a range of prices, from $35 up to $450)

[Mrs Figg]

it would be good if they can have prescription lenses as well so people can use them as ordinary glasses, also if they could have clearer lenses so that they can be worn indoors, I imagine they are a bit dark. it is odd that they choose to see colour for the first time in ordinary settings, I would go to a sunset or a forest of flowers, but I guess even a garden centre is mind-blowingly amazing if you have never seen colours before. They seem to go really crazy over purple for some reason, it seems to be a really an incredible colour

[halfwise]

Purple can be a mix of red and blue - if red seems to include green, then it would look white to them.

[Mrs Figg]

wow! no wonder its such am amazing discovery.

[halfwise]

It depends on how the purple is made. If it's a pure wavelength on the short end of blue they can see it, but if (more typically) it's a mix of red and blue, then it will be pretty pale to them, I'd think. (but I don't know)