As my Chemistry teacher once said: You can drink everything -but some things only once...

Once you reach a certain level of genius the hair becomes sentient .

Guys, don't laugh at his hairstyle. It gives him +2 to his inteligence stat and a +1 to all mental saving throws.

You know he’s a great professor when he goes off on stories and tangents that are barely related but very interesting

as soon as I seen his hair i new he was legit.

"Drinking D2O makes the reactions in your body slow down" Ah, the fountain of youth.

"If you dillute your whiskey with D2O you won't get as dizzy" To be fair that's true for H2O as well

This man look like he discovered time travel and is now showing it off

I prefer light water, I'm on a diet

You can drink it, but it will make your hair grow out of control.

I like how KZfaq suggested part two… When I’ve never even watched part one…

I trust this man with every fibre of my being.

0:34 that zoom in was so unnecessary I love it

Crazy hair, lab coat, British accent = genius most likely.

He looks like that one scientist whom everyone calls mad by his hairstyle but at the end he proves that time travel is possible

Thr sabotage on the Norwegian Deuterium plant was made into the movie "Heros of the Telemark", starring Kirk Douglas.

I think he combs his hair with a firecracker.

His hair has more knowledge than I do.

I see, this video is being recommended after Thunderfoot and Cody's lab did the taste test experiment with heavy water that eventually got published in a scientific journal last week. The result was that in humans, heavy water taste like 1% sugar water, while in rats, the rats were able to detect that heavy water is toxic to them and was able to discern heavy water from regular water even when bottles containing the water were randomly shuffled around.

I've tasted heavy water and it tastes exactly the same as normal water. I'm a PhD student in organic chemistry and I use NMR everyday.

What an amazing man. He explains things so well without talking down to you. I could listen to him all day !

I always drink some heavy water with my yellow cake

I like how happy he is that no one was injured or killed during the raid😂

"Is it safe to drink heavy water?" Google: **shows this video** Bing: *WATER IS WATER*

Periodic videos: "Can you drink heavy water?" Cody's Lab: "Drinking heavy water"

Can you drink heavy water? Cody's lab: Hold my water...

The Heroes of Telemark (1965).... A must watch film👍

As Marty McFly would say, "This is heavy."

i feel like this man is holding the secrets of the world in his hair

what kind of scientist are you? this man: yes

His hair is one of the criteria to be what we call a scientist

It's a little bit sweet. Cody from Cody's Lab tested it.

The professor is science personified

i like how the real objection to drinking D2O is "...anyway, its FAR TOO EXPENSIVE..."

There’s something so impressive about someone who can explain something really in a really clear and precise way without sounding patronising.

A sign of knowing your topic is to explain something in the fewest number of words. Always love listening to his straightforward honest explanations.

Well, you can drink everything, but in some case you'll be able to drink it only once :p

His hair doesn't correlate with anything on this video, or whatever he does. He's awesome and way smarter than everybody in this comment section.

I was born in the town he is talking about in Norway (Rjukan). Cool that he is talking about it

D2O is sweet-tasting Thunderfoot recently talked about research into the taste of D2O. Also Cody's Lab did a tasting of D2O.

This species of hair likes to inhabit humans and turns them into geniuses.

The dog at the Argonne lab developed superintelligence and crude vocal abilities and went on to sign up with a team of mystery solving teens. However, the trauma of growing up in a research lab left him afraid of his own shadow and addicted to cheap off brand canine snacks.

I really like his periodic table of videos! So much information!

Dudes hair is at Super Saiyan level of smartness

Drinking a glass of heavy water normally is just like drinking ordinary water. Unless you drink it fast when you are really thirsty you might briefly feel thirstier as it pulls normal water out of your throat tissues faster than it diffuses in. Rats can distinguish it and will avoid it if they have access to normal water. Drinking a glass or so a day isn't harmful but if you start drinking it by the gallon bad things will happen. Nothing much happens until you reach about 20% replacement. Heavy water in high concentrations directly inhibits cell division by stopping meiosis.. First, you stop producing ova and sperm cells and become sterile. At 25%+ you get gastrointestinal inflammation and hair loss. At 30% replacement, your bone marrow stops working and platelets and red blood cells and white blood cells disappear and you die of aplastic anemia. No mammal can tolerate more than about 30% replacement of normal water by heavy water. In general, all plants and animals die by the time you reach 50%. Some micro organisms can tolerate 90% to a 100% replacement but they grow very slowly and often have distorted cell shapes. The effect is akin to radiation. Prokaryotic organisms like bacteria that don't have chromosomes are more resistant. Some attempts were made to see how it affected cancer cells. but the concentrations required were too toxic to normal cells to be of any use. One easy way to distinguish heavy water is to freeze it in ice cubes. Then chill normal water in an ice bath until it is just above freezing and put the cubes in. Heavy water freezes at several degrees above freezing so it will not melt, and the cubes will sink instead of float as they are about 10% heavier than normal ice cubes and are heavier than liquid water at 0 degrees..

Wow! I just found this site! Now I'm binge watching now! Love this guy and how he explains everything in a down to earth kinda way!

It is such a pleasure to listen to you!

He has a face where you can trust anything he says. If he said jump off a 10 story building and you will survive then I would.

Who is his hair stylist.? Einstein got nothin' on this dude.

Love watching Periodic videos - He does such a great job of explaining chemical science.

As soon as I saw his hair, I knew the comment section was on fire. 😂

The fact they’re so knowledgeable, so professional, while still having a sense of humor. It really makes my day

So if you use D2O in Whisky you'll either not feel so dizzy afterwards or you'll never feel dizzy again. Win-win I'd say.

11 years later with the broken recommendation system landing here, I just HAVE to point out the unintentional comedic genius of the camera man. What was going on with the dramatic zoom at 0:33? I just... I don't know, but it got a healthy chuckle out of me. Well done all around, great video!

My Goodness, Yet another Question found in KZfaq that I never knew I needed to ask. Love this video.

This guy looks like science.

Stop speculating and drink it already! That's what science is all about.

D2O is frequently used in metabolic and body composition studies in humans, including infants and children, where it acts like a "dye", dissolving in all the spaces where water dissolves. Small amounts are very safe.

This is the kind of guy who I'd sit and listen to for hours

Quick answer: Yes. Dufferentiated Addendum: But not too much. Personal opinion: It's too expensive.

how do you grow that hair

Possibly he was standing too close when the current was passed through the water. Actually, this is very interesting.

Great info, thanks!

This guy's voice is perfect not to fast nor to shakey. He explains in a way that's easy to take in.

I thought the title said “Can you drink heavy metal” and the person in the thumbnail was Brian May

Great Scott!

D2O has no noticeable effect on your body if you do not consume it often or in large quantities. You can take like 1 milliliter without being afraid as long as you don't take it more than once. It taste oddly sweet

If science was a person it'll be this man.

Does he have a van der Graaf generator under his desk?

He an answered a question that I never wondered about and his answer was fascinating.

I love the dramatic zoom at 0:33

See you all in 10 years when this is in recommended again

We all drink D2O, just diluted 7000:1 with H2O.

Went straight to the comments, wasn’t disappointed.

That was really helpful for me...

Love the ending explanations about drinking D2O. "Any way it's far too expensive" lol

His hair is incredible.

I would have so much fun organizing that bookshelf.

The power plant is located in Rjukan, it’s only 3 hours drive from Oslo. Beautiful place.

He looks exactly like someone I will pay attention to and believe when he talks about science, even if he is a bathroom attendant.

I love the professor, he knows so many legends and stories and speaks in such an interesting way.

I like how they add historical legends on their lectures to spice up the content.

Ahhh finally!, i found some info. Been always wondering about this question since my 6th grade when i came across some nuclear-science chapter in the physics book for the first time. I was 11.5 yrs then and am 31 now, Christy christ!! This was simply awesome to fumble across. TY uuploader, nice upload!

Heavy water is just water that listens to Slayer.

In other words, Drinking Heavy Water has the same effects as ingesting arsenic, but the effects are so minuscule that it would not effect you much.

This man is brilliant, such a pleasure to have him on youtube

Just watched this then realised it's 10 years old... KZfaq algorithm strikes again.😆

I think it would be cool to be heavier without increasing your volume for a few months and going back to regular water and seeing how much more agile you feel. That's assuming of course that it's not too toxic.

He looks just like the stereotype science teacher haha

You are correct no one was killed during the raid. However, before the raid the raiding team was meant to be joined be extra troops. The aircraft was shot down, I think 50 souls were lost (not sure on the number). So there was loses during the mission on a whole.

Thunderfoot recently made a paper about drinking heavy water for those who would like an update on this question

I agree, whisky is far too expensive!

5:28 "Oh hey...w-wait are you filming me?!"

Thunderf00t: Hold my beer.

Professor almost led me to pursue chemistry but then KZfaq was banned in my country

Honestly searched this up cause of the Norway mission in battlefield 5

I think Steven Poliakoff should be the next Q in the Bond movies. I can just imagine him handing bond a tablet saying it will enable him to get less dizzy when getting drunk but saying he can only have one because "they cost too much"... Classic.

Respect to you professor.

I was in a pub in North Wales about fifteen years ago. One of the customers had some heavy water in a bottle and he suggested that I try it with a spirit. I didn't do it, but some people did.

I propose a drinking game! Every time a dude(tte) make a hair joke in this video, we drink a sip of heavy water!