6 of the Longest Experiments Ever

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From the bell that hasn't stopped ringing, to observing evolution in action, SciShow presents 6 of the Longest Experiments Ever.

Hosted by: Hank Green
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The Electric Bell

Beal’s Seed Viability Experiment

The Pitch Drop

Framingham Heart Study


500-year micro experiment

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SciShow science Hank Green education learn 6 of the Longest Experiments Ever Electric Bell Oxford batteries dry pile power zinc sulfate manganese dioxide soil William James Beal species hardiness Pitch Drop Thomas Parnell asphalt flow viscosity The Framingham Heart Study Massachusetts cardiovascular disease cholesterol high blood pressure smoking stroke heart disease genetics E. coli evolution bacteria cultures generations strain microbiology Seed Viability

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    Popular Comments:

Kaila A . 2019-02-18
Are we not going to talk about the amazingly timed, unfortunate blackout in 2000. I mean, that's basically novel, man.
121 2 . Reply
Thoth Garcia . 2019-02-06
You stole this from another's channel . js
121 2 . Reply
Hood Baby . 2019-02-06
Hank is such a muppet
121 2 . Reply
CJ G . 2019-02-05
Thought you might have shown us the footage of the drop when you mentioned it. Pity you didn't.
121 2 . Reply
Jason Kraemer . 2019-02-04
Cool info. I just wish this new editing trend would end where after every sentence, the natural pause between words is completely cut out. I feel like I’m being assaulted with words.
121 2 . Reply
Chris Cross . 2019-02-02
So pitch is like glass.
121 2 . Reply
Abbieq11 . 2019-01-18
We’re dead
or are we???
121 2 . Reply
Jaziel Espinoza . 2019-01-17
What if it had to do with temperature. Maybe the enclosure where the drip is setup isn't climate controlled. But that wasn't a serious concern 100 years ago. Usually higher temperatures lower viscosity. Idk it's just my theory
121 2 . Reply
slavetomyworld . 2019-01-13
The scientists with the asphalt just have never tried to get any kind of sauce from a bottle...... Drip...drip...down pour.
121 2 . Reply
Shea Goff . 2019-01-11
The battery in number one needs to be used in phones
121 2 . Reply
Summer Brooks . 2019-01-05
This clearly demonstrates the true meaning of longitudinal. I thought 50 years was exceptional!
121 2 . Reply
Joshua Slowpoke . 2019-01-05
Should we start using “like watching asphalt flow” in place of “like watching paint dry” sometimes, from now on?
121 2 . Reply
Rob Davison . 2019-01-03
Get rid of the chop editing. It is annoying and juvenile. I will not subscribe till you do.
From an old fart.
121 2 . Reply
christopher dodd . 2018-12-29
Pretty arrogant to think no one will be alive in the 2500s I plan on living forever.
121 2 . Reply
K D . 2018-12-24
as an immortal i cant wait to see the global pandemic when one of those microorganism bottles gets popped open 300 years from now and someone gets scraped by it
121 2 . Reply
Marcio Astor Pooter . 2018-12-21
It´s beautiful how the E. Coli are still the same species. And how it exposes the theory of evolution from one spcies to another. But SciShow hides this.
121 2 . Reply
Martin Courtenay-Blake . 2018-12-20
The original pitch drop experiments were devised by Lord Kelvin in Glasgow University (where a demonstration piece he set up is still running) in the 1880's. There is also one still running in Edinburgh as well as Aberystwyth both of which pre-date the Australian experiment.
121 2 . Reply
Daniel robles . 2018-12-20
Imagine your phone battery last a 100 years. That would be fun
121 2 . Reply
Daniel robles . 2018-12-20
Men open it! it would take years before they upgrade the batteries pleasee i dont wanna get my phone low battery again.
121 2 . Reply
Lance Kaz . 2018-12-20
I know of a multi-decade experiment done with glass to prove that glass doesn't flow at room temperature. Three glass rods were suspended horizontally and supported at both ends. Weights were hung from the center of the rods. Over the years, the glass rods did bend. However, it wasn't a permanent deflection (it was elastic strain, not plastic strain). To prove it, the weight was removed from one of the rods. Within 24 hours the unweighted rod returned to being a straight rod. I have a book (no longer in print) on glass science that mentions this story.
121 2 . Reply
Lance Kaz . 2018-12-20
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David Culbertson . 2018-12-20
The pitch flows faster because there's less of it. Room temperature affects it easier and causes it to warm faster and flow faster. Railroad ties ooze pitch when the sun is hot. It flows faster the warmer it gets.
121 2 . Reply
Savage King . 2018-12-19
Longest time having sex
121 2 . Reply
CMDR Vllama87 . 2018-12-19
I have a friend with spinal bifida who was part of a clinical trial from the day he was born until his 30th birthday... does a clinical trial count as an experiment?
121 2 . Reply
Billy Willy . 2018-12-18
Crack that sealed battery open and out hops the Energizer bunny!
121 2 . Reply
Maenethal . 2018-12-18
Not going to live that long? Jokes on you, I'm going to transplant my brain into a robot body so I can live forever! Either that, or find the elixir of life.
121 2 . Reply
Narcoleptic . 2018-12-18
121 2 . Reply
Kasper Nielsen . 2018-12-18
Pitch and asphalf is not the same thing....
121 2 . Reply
rad . 2018-12-17
420 dislikes nice
121 2 . Reply
Psianth . 2018-12-17
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Warrus The Walrus . 2018-12-17
Longest experiment ever:

How long does it take for me to get laid?
121 2 . Reply
Aldair Colona . 2018-12-17
Abdel Hafez. I can't reply your commet so I think 489 is the limit of replies for a YouTube comment.
121 2 . Reply
Scy . 2018-12-16
lol, you old fashion humans... "dead"... as if that's even a thing in the future.
121 2 . Reply
gabriel perez . 2018-12-16
My question for the 500 year experiment... Will we ever be able to simulate the exact nature of these creatures? Because if in 2100 we have a quantum or just powerful enough computer to run these simulations, the experiment could be cut short. Or is there something im missing?
121 2 . Reply
Izak du Preez . 2018-12-16
your hips are getting wider, must be the clickbait. "6 of the longest" i can hold my breath for 5 seconds, film it, and its one of the longest, also one of the shortest, but most importantly, one of the many.....
121 2 . Reply
T Orrent . 2018-12-15
Shitty editing makes for a shitty video.
121 2 . Reply
nointro . 2018-12-14
I'm doing a "what happens if you never get laid" experiment. It's been going on 44 years.
121 2 . Reply
coooolibri . 2018-12-14
btw the asphalt is similar to old church windows. some teachers taught me later, that glass windows are actually not solid. they are in a liquid state.
121 2 . Reply
erkin tek . 2018-12-14
this is video you should show more content rathewr than yourself
121 2 . Reply
That Guy Magnum! . 2018-12-13
I go to the university that has the pitch drop, I wanna see it drop so bad.
121 2 . Reply
Suzaynn Schick . 2018-12-13
Some of your shows are about explaining science to non-scientists. This show was for the scientists. Gorgeous experiements!
121 2 . Reply
Main . 2018-12-13
if you liked this video, you will prolong your virginity 10 years.
121 2 . Reply
Logan Revesby . 2018-12-12
I know of an experiment that's been going for about 14 billion years.
121 2 . Reply
D H . 2018-12-12
Xray that battery ultra sound weight calculate density
121 2 . Reply
Mritsonlyaname . 2018-12-11
Seems like the electric bell is probably a hoax/inside joke.
121 2 . Reply
Dhaval Tandel . 2018-12-11
Subscribed 👍
121 2 . Reply
Johnny five . 2018-12-11
Gotta throw this... BUL*S***... I can see planets thousands of lightyears away due to spectroscopy, xray rebound, etc... these can be done at short range analyzing EVERYTHING in this tube... you don't have to "open it up"...

1 - Battery
121 2 . Reply
Vedraj r.m . 2018-12-11
God experimenting with life
121 2 . Reply
Nine Man . 2018-12-09
the baterry was made way back then are much diff from common...... like wtf durrr cars are plastic and carbon back then metal
121 2 . Reply
Dan Jachera . 2018-12-07
the first one aint even an experiment just a story
121 2 . Reply