fr0gg0

[fr0ggo00]

I'm in that p*ssy like a timberdoodle, repeatedly stomping to attract earthworms

[pnwnativeplants]

[magneticrabbit]

tea with the visiting erebus doctor

[viktor-sbor]

A 50-kilogram anvil floats perfectly on the surface of mercury, because the density of the steel from which it is made is almost half the density of mercury.

[e-102]

damn that shit is light lmfao

[telltaletypist]

[vienna1954]

Fun fact! Many lighthouses with especially large fresnel lenses would have huge fucking tubs of liquid mercury in the lantern room because it’s a super easy way to make these giant lenses rotate quickly!

Shockingly, however, spending most of your time in close proximity to 500 pounds of liquid mercury is Not Great For One’s Health and tons of lighthouse keepers started to go crazy from the whole. Mercury poisoning thing. Hence why there are a lot of “haunted” lighthouses or wickies that lose it and maybe do a bit of manslaughter.

Anyway, people saw a bunch of lighthouse keepers go crazy and get sick and got empirical evidence that it was in fact related to the 500 pound mercury bath they have to visit every day and then they decided nah it’s fine actually. So we’ve kept the liquid mercury thing and I think that’s beautiful

[ben-the-hyena]

I love how it is so dense it does not "wet" the anvil, the drops all run and leave with nothing behind them unlike water, oil, sauce... it's super satisfying it's like in cartoons

[macleod]

In a letter written on April 19, 1825, Augustin Fresnel proposed the use of mercury to reduce the friction in revolving lenses. His statement follows: “I propose to float our rotating devices, of the first order, in a bath of mercury, instead of placing them on rollers. This project won't present many difficulties; nevertheless, as I have not put it into execution, I won't require you to adopt it for your first lighthouse.”

Fresnel’s plan for mercury flotation was not put into practice until 1890 when Monsieur Leon Bourdelles, Chief Engineer of the French Lighthouse Service, designed and built a workable mercury flotation system. The mercury bath allowed the lens to operate in an almost frictionless environment and, additionally, allowed the speed of rotation to be dramatically increased.

Lens Rotation by Thomas Tag | United States Lighthouse Society

[sashaforthewin]

Ah to be a sailor in 1890 who has to turn to his fellow men and ask "is it just me or are the lighthouses flashing faster?"

[asteroidtroglodyte]

They had been slowly getting faster for decades.

It mattered for optics reasons.

Under less-than-ideal conditions, you can only see the beam when it’s pointed more or less directly at you. In-between beams you would not be able to see anything. One solution to this was to create multiple beams, and the lenses Mr Fresnel designed usually created 8 beams. But, even still, duration between flashes could be as long as one minute in the old mechanical roller systems.

The nearly frictionless operation of the Mercury suspension system allowed the lenses (large pieces of precisely ground glass weighing several hundred pounds in some cases) to rotate fast enough that they could be redesigned to create fewer (usually 3) beams. Fewer beams from a similar light source will be proportionally brighter, and the gains in speed were sufficient that duration between flashes could still be reduced to as little as 10 seconds.

This was a big upgrade. It didn’t just make the lighthouse signal faster, it allowed them to completely overhaul the lens and derive more visibility from a light source.

What’s a little Madness, in the face of Progress?

[myth-myth-yeth]

mods are asleep, post the fresnel lens

[relevant-wikipedia-articles]

History of lighthouses - Wikipedia

[swordseer]

The Lighthouse that I work at has the only working Mercury float on Lake Superior. It took me forever to figure out how it worked, this post is great,

[uwillneverknowwho]

Literally always take headphones with you. If you decide that you probably won't need them today, that's the devil talking. You will. You will

[homoqueerjewhobbit]

Music playing at the grocery store is psychological warfare. Protect yourself.

[revolutionradi0]

so i am in kazakhstan right now and today im gonna go birding at the charyn canyon, where there is a possibility i might see an egyptian vulture (a bird i LOVE and really wanna see)

so last night to be funny i posted “if i see an egyptian vulture tomorrow i will cry” as my note on instagram and didn’t think much of it

i scroll for a bit and come back to my messages page and see that my friend yuze has put “if i see an egyptian vulture tomorrow i will eat it” as his note

obviously i thought this was funny so i messaged him being like “copycat smh but why are we eating vultures” took a screenshot and sent it to my best friend david being like haha look yuze copied my note

and neither of them responded for a bit so i went to bed

and then i wake up

they’ve multiplied

david has texted me “my turn” and set his note to “if i see an egyptian vulture tomorrow i will eat it”

some guy i kinda know named elias has set his note to “if i see an egyptian vulture tmrw i will eat it”

a dude in my band class named dan has his note at “can we stop talking about egyptian vultures”

anyway guys wish me luck i hope i see an egyptian vulture today

[ebulatheduck]

just watched a bird snatch another bird out of the sky. my day is the opposite of ruined, that was cool as hell

[cringecorp]

[epicsause-official]

just got an idea for a banger couples shirts design

[biggest-gaudiest-poltergeist]

I'm trying to think of the name of those off-brand hedgehog things but the only thing that comes to mind is enchilada

[l0s3r-g0r3-d3s7r0y4]

Echidna

Heres some babies

This one is less baby

Fun fact. These motherfuckers can kill you

[shinypenguinpizza]

Their dicks have 4 heads

[biggest-gaudiest-poltergeist]

thank you! i hate this more than words can express. this is horrible, truly. DO NOT CLICK KEEP READING

congratulations! echidna dick now lives in your head rent-free

[darinaethelaianprophet]

ALL THE KNUCKLES PORNOGRAPHY IS INACCURATE

[biggest-gaudiest-poltergeist]

why do people keep saying this

[biggest-gaudiest-poltergeist]

#important to note tho! they only come from one head at a time!#scientists jerked them off to find out!

everyone say thank you scientists

[desikanya]

From the diary of Franz Kafka

[goldswords]

THAR SHE BLOWS!! A LIFTED BLACK FORD F150 WITH TINTED WINDOWS. PASSENGER PRINCESS, GET THE HARPOONS!!!!!

[dogpuppy]

Me when my asshole itches and I’m on the moon

[dogpuppy]

My best post.

[oh-no-its-bird]

Pilot dropped his water bottle underneath the console and it got stuck behind the peddles; They were talking to maintenance and asking them for a giant stick to try and poke it out from under there because obviously, that's a HUGE safety hazard. I finally bullied my way into the cockpit insisting I was small enough to try and just grab it and managed to wiggle under and get it in like 5 seconds flat.

They looked at me in pure awe. I have never felt more powerful.

[oh-no-its-bird]

Artistic rendition

[screwzara]

[shalmonsdraws]

honkin yappin

[butter-huhs]

Bitches love me for my willingness to commit to the bit