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SFsaavikford.bsky.social

Meat rock is a catchy nickname! But but but… calcite!! Trilobite eyes!! Viking sunstone!! Cave draperies!! The reason we’re not Venus!!!

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SFsaavikford.bsky.social

It’s ok you can still campaign for trilobite eyes!!!

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JCtinyweasel.bsky.social

Aww man I just voted for meat rock, I didn't know calcite did trilobite eyes!

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BMsilicatefondue.fosstodon.org.ap.brid.gy

Inspired by trilobite eyes researchers at the National Institute of Standards and Technology (NIST) have developed a miniature camera featuring a bifocal lens with a record-setting depth of field. See […] [Original post on fosstodon.org]

The NIST press release describing the use of trilobite eyes as a guide to developing large depth-of-field lenses.
A diagram from NIST showing how the trilobite-inspired lens can focus both near and far objects simultaneously.
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BMsilicatefondue.fosstodon.org.ap.brid.gy

Trilobite eyes are made of calcite! They have a specific shape that compensates for being rigid and allows for a broad depth of field that is in focus. This shape was rediscovered 500 million years later. Great websites and photos […] [Original post on fosstodon.org]

p_rana_cras_eyes.jpg from https://www.trilobites.info/eyes.htm A well-preserved fossil of a trilobite showing the compound eyes made with lenses of the mineral calcite.
Lens designs that minimize aberrations and maximize depth of field (distances that are in focus) developed by Huygens and Descartes. These designs evolved in trilobite eyes with calcite mineral lenses. From https://www.trilobites.info/eyes.htm
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SFsaavikford.bsky.social

It’s time to GOTV for #Calcite#MinCup24

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MWmicahseacole.bsky.social

Congratulations on the milestone <3 My favorite critter is the Trilobite Beetle (females specifically, they have all the perfect shapes) favorite character this scrugly little fella:

MWmicahseacole.bsky.social

#OcIntro - Kyri Name: Kyriakos Age: between 20 and 2000 (dating of samples has been inconclusive) World: ParaMilitary Summary: Kyriakos was found in a hideout of smugglers/poachers of paranormal beings and objects in the middle east. (cont)

A digital sketch of a mythical sphinx character sitting on the floor while intensely scratching his ear with a back paw. His front paws are sliding along the floor and he is grimacing like a dog really enjoying a good scratch.
a digital illustration of a sphinx. He is standing on all fours and is seen in side profile. His body structure is a mix of human and lion, with uncanny proportions and facial structures that fall neither in lion nor human anatomy comfortably. He has large round ears, a short snout, long human like arms and hands and a short tail. His fur is colored like that of a lion, with some light spotting on his legs and belly. His short mane and tail tip are both dark brown.
the same Sphinx but with a very scruffy and patchy mane that can barely be called such.
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