Share Animal Pictures: For Animal Lovers

[BillTre]

 

[BillTre]

Opps. Left out the caption. Its a fossil crinoid. Like an upside-down star fish (sea star) on a stem.

 

[berkeman]

Opps. Left out the caption. Its a fossil crinoid. Like an upside-down star fish (sea star) on a stem.

Looks like the movie Alien...

 

[BillTre]

Tartigrade:

 

[symbolipoint]

BillTre,
Was that microscopic fancy-lit picture organism photographed using some digital type software, or was using photographic film?

 

[BillTre]

They probably used a digital video camera mounted on a microscope with the fancy contrast optics (like phase contrast).

 

[Andy Resnick]

They probably used a digital video camera mounted on a microscope with the fancy contrast optics (like phase contrast).

The optics aren't that complicated- just imaging through crossed polarizers. The way colors are generated is a little tricky, but basically result from what is left when a narrowband portion of of the illumination spectrum is rejected (because of the 'retardance' of the material). The poster used a basic petrographic setup, you can get similar rainbow colors from hair/bone/teeth, anything birefringent with a vaguely crystalline structure.

 

[DaveE]

polychromatic polarizing microscopy is a bit more complex than conventional polarization microscopy (the one with crossed polarizers and a waveplate). In PPM, instead of a simple polarizer in front of the illumination they construct a different polarization state for each wavelength for the illumination. At least that's how I think it works, I'm certainly no expert. You can read about it in this patent.

https://patentimages.storage.googleapis.com/13/76/77/be4559922a6c31/US9625369.pdf

 

[BillTre]

 

[Swamp Thing]

Rather long, but well worth watching.

 

[BillTre]

Rather long, but well worth watching.

Pretty amazing, but somehow appropriate for someone going by Swamp Thing.

 

[DennisN]

I just heard that a new cat species has been discovered in Bolivia:

The tilcayo (Leopardus tilcayo) is a species of small wild cat in the genus Leopardus. It is native to Bolivia, and represents the first cat species named since 1923.

It's a gorgeous animal, two photos:

Source: Tilcayo tiger cat (Wikipedia)

Two articles:

• See the first new species of cat discovered in more than a century—it’s adorable (Scientific American)
• New species of wild cat discovered in Bolivia’s cloud forest (BBC Wildlife)

 

[BillTre]

Using different filter sets lets the labeling of different parts be shown in the different combinations.

 

[BillTre]

Two headed diamond back terrapin hatchling found in Cape Cod.

 

[BillTre]

 

[BillTre]

 

[renormalize]

(Image removed)

Huh???
This image is explicitly labeled "AI content" and ZeroGPT gives the response:

So what's the point of posting it?

 

[berkeman]

This image is explicitly labeled "AI content" and ZeroGPT gives the response:

Thanks @renormalize I thought it was pretty unbelievable, but that's why I "Like"ed it.

 

[BillTre]

Huh???
This image is explicitly labeled "AI content" and ZeroGPT gives the response:
View attachment 374563
So what's the point of posting it?

Guess I missed that.

 

[Andy Resnick]

polychromatic polarizing microscopy is a bit more complex than conventional polarization microscopy (the one with crossed polarizers and a waveplate). In PPM, instead of a simple polarizer in front of the illumination they construct a different polarization state for each wavelength for the illumination. At least that's how I think it works, I'm certainly no expert. You can read about it in this patent.

https://patentimages.storage.googleapis.com/13/76/77/be4559922a6c31/US9625369.pdf

Just saw your reply, this is a little more interesting. If I understand the patent description correctly, what I need is a wavelength-dependent polarization ellipse azimuthal angle 'θ'. My magic book ("Ellipsometry and Polarized Light, Azzam and Bashara) has some information on how to do this; I think all I need is a 'bad' (large longitudinal chromatic aberration) retarder. I'll have to check this out!

 

[Swamp Thing]

 

[BillTre]

The sheep butted the robot thing over before the dog got to it:

 

[BillTre]

 

[BillTre]

 

[symbolipoint]

In regard to post #3084, the crows on the electrical lines, somebody several decades ago commented that birds on telephone wires look like written musical notation. Best I recall, Sabicas was the one who said something like that.

 

[berkeman]

Reminds me of the Paramedic meme I see often:

 

[BillTre]

 

[renormalize]

View attachment 374923

At the risk of sounding like a broken record, before posting images to this thread can submitters please verify their authenticity using something like zeroGPT, and then either explicitly label them as AI-generated when appropriate or better yet not post AI pictures at all?

 

[berkeman]

Mentor Note: the PF rules require attribution for AI posts in the General Discussion forum. Any issues with this in the future could result in warnings/infractions. 'Nuff said I hope.

 

[symbolipoint]

Mentor Note: the PF rules require attribution for AI posts in the General Discussion forum. Any issues with this in the future could result in warnings/infractions. 'Nuff said I hope.

In what ways or , how far does the A.I. restriction extend? A.I. seems to be creeping into new things in which a person or user has no intention for any A.I. yet it is put into place. Person have smartphone, camera present on it, camera mobile app maybe already works using A.I. So no picture upload to PF?

I have no interest in artificial intelligence for standard photograph nor for videography. Older small "digital" camcorder - none of any A.I. Android smartphone, camera and a camera app present? I have no idea any A.I. or not.