Electromagnetic absorption by water

[Andrea B.]

again....I fixed it!!

 

Looks good on my phone or monitor.

[Stefano]

...Andrea, don't get mad, but on my phone, in a vertical position, it still looks skinny. But, really, it isn't so important. Don't become crazy trying to fix it.

[dabateman]

To fix the squishy thing. You would need to somehow truncate these two tags:

water, and heavy water in the visible region of the spectrum", 1963. Data: https://omlc.org/spe.../sullivan63.txt

Source 2: "Optical constants of water

 

Some of the sources listed above can be found here: http://omlc.ogi.edu/.../abs/index.html. This is a collecti

[dabateman]

Ok they truncate just fine here.

I wonder why not on the first page.

[lukaszgryglicki]

Here are some "movies" made by FLIR E70 thermal camera (sorry, but it only has 320x240 resolution) converted by my own tool (written this myself in golang). Water is opaque in this wavelength 8000-12000 nm (or 8-12 microns):

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While the germanium metal is transparent (I have a 1cm cube, also lenses for this camera are made from germanium with DLC coating - diamond-like carbon):

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Hope that somebody finds it useful. I can provide more stuff from the E70 camera if anybody wants anything.

[Stefano]

Interesting. Germanium is cool also because it has a very high refractive index of about 4, and that means that you lose about half of the transmitted light in reflections. Diamonds are shiny because of their high refractive index (~2.4), so a piece of germanium cut like a diamond would be extra shiny in IR.

 

I also have to finish those tables.

[colinbm]

Lukas, those girls are 'hot'

[Andy Perrin]

No shortage of thermal cameras on this board (I own four) but the E70 certainly takes nice video.

[lukaszgryglicki]

Actually YT adds a lot of compression-like artefacts, no idea why - they are like someone ripped a DVD with a very low bitrate.

Files that I've uploaded to YT were 320x240 (low res, like the camera itself) but were crystal clear of JPEG-like compression artefacts.

Girls indeed are hot - they emit mainly 9354 nm light.

[Andy Perrin]

Lukas, have you considered Vimeo? Some members have tried it. Also it is possible to embed both YT and Vimeo directly on the board here.

https://www.ultravioletphotography.com/content/index.php/topic/4332-how-to-embed-a-youtube-video/page__hl__%2Bembed+%2Bvideo__fromsearch__1

And

https://www.ultravioletphotography.com/content/index.php/topic/4331-how-to-embed-a-vimeo-video/

[lukaszgryglicki]

Thanks, that wasn't for this forum, just uploaded to YT long back.

If I need to upload anything here, I'll just put it unmodified on my own server and just paste a link here.

[Andy Perrin]

No, I’m saying you can show (embed) the movie here not host it here. So we don’t have to click the link.

 

Example:

https://youtube.com/lDc_KEc3xYM

[lukaszgryglicki]

OK, thanks, anyway don't even have access to the original file now, it's o a different computer.