Nuclear Engineer Reacts to Kurzgesagt 'The Size of Life - Parts 1 and 2'

Original Videos @kurzgesagt:
Nuclear Engineer Reacts to Kurzgesagt "The Size of Life - Parts 1 and 2"

[dochollidxy]

My moderate fascination with nuclear led me to the channel but honestly I'm hooked on all of the different content! I liked the easygoing manner and that you explain things so that it's easy to understand while not seeming like you're explaining it to a toddler. Great work!

[londonjedi]

The kaiju in The Kaiju Preservation Society by John Scalzi actually have biological nuclear reactors with which they use to sustain themselves.

[rambysophistry]

Interestingly, the thing to note about heart rate and life, is that it is somewhat causal. Yes, having a perpetually fast heart rate will predispose someone to heart failure earlier in their life then someone with a slower heart rate. Indeed, those things that cause faster heart rates, if they are not controlled and kept in certain boundaries tend to be pretty bad over all because they are outside of a safe envelope.

[xHFSxShadow]

It's been fun watching your input on a lot of videos. Though I do suggest making a note of recommending the viewer to watch the og video first.

[bigfishoutofwater]

A modern space elevator concept is a tension structure rather than a compressive structure so the bottom isn't being crushed by the weight. The material does need to be very strong but in a different way.

[bigfishoutofwater]

A larger volume in a building does mean more air to condition. However, the heat transfer is only through the building envelope. Once you're at the target temperature the surface area of the envelope and how well it is insulated are what matter. Sunlight, windows, air leakage and managing the moisture in the air are also significant factors that impact overall energy used to maintain comfortable temperatures.

[HueNasty]

A really good analogy for a heart is actually a car tire. There's different kinds that are made a little differently, but generally out of the same basic materials. The faster you drive the quicker the tire wears out, same goes for your heart. Then outside factors like smoking, drugs and unhealthy foods can affect the quality of the road the tire is being driven on. The heart is a muscle and like any other and it can be trained into being stronger, if cardio exercise is down properly. Your risk of heart attack slightly increases, but your heart becomes much more durable and efficient at carrying oxygen through the body.

[joshuab]

Oooh a perfectly timed video for my lunch, thank youuuu

[atlachanacha]

14:26 - This made me remember Donald Duck comic story, I read in my childhood:
There was an igloo building competition, "hero team" made an functioning small igloo, "opposition team" bend the rules, and build a enormous snow castle.
Judge first declared small igloo as too cramped up, and castle as much worthier for his status, to sleep in...

Of course the castle was too big for residents to heat it up for good night's sleep, unlike the small igloo, which was declared to be winner for actually functioning like an igloo.

[ryanheister]

“Half as Interesting” just released a video on nuclear reactors that you should look at.

[markandrew]

The thing about house volume translating to heating bill doesn't seem to me like it would be true. You're ultimately concerned with the rate of heat exchange with the outside, which scales with surface area. A house that has taller floors than another would lose or gain more heat than one with shorter floors and the same floor area, but it wouldn't be proportional to volume. Unlike with animals, you also don't have every unit volume of a house generating some amount of heat either. It would also scale with size as you would likely use more and brighter lights, have longer wiring runs with more resistive losses and such, but it should still not be proportional to volume in either of those cases.

I think the one thing that would have a proportional relationship with volume is the thermal mass of the air in the house, so it would take more energy to actively change the temperature, but the heat exchange with the environment at steady-state would be proportional to area of the walls, roof, and floor.

[daria_morgandorffer]

My husband has a degree in chemistry and were watching this in bed and he tended to agree with you about the heat beat thingy saying “making your heart beat so fast to me is the equivalent of driving 80mph on the interstate in 1st gear, compared to 6th gear. One is about 7200rpm and the other is about 1600rpm. It will do it but it’s not good for it and adds undue and significant stress.” His car is a Dodge Challenger Hellcat wide body 6mt in plumb crazy purple with a mat black top. I’m not bragging on his behalf I just know inevitably someone will ask. Also we love talking about our cars and racing/flying. Anywho we both love your videos and implore you to keep up the good work. We occasionally come to Texas to race in our free time so you’re always welcome to come get some free hotdogs in our pits!!!

[zacharytaylor]

I found a simulator of an RBMK that might be cool to try out. It requires a simple patch to burn off the xenon-poisoning in a reasonable amount of time, but I would love to see you comment on how realistic it is. Takes a bit of digging to find, but there is some documentation avaliable. Id love to share the links, but im afraid i'd get autoflagged as spam if i did.

[EliasMheart]

22:07 I guess that meditation will increase your lifespan? xD Those immortal monks are onto something?! ;P

[CosmicAggressor]

Probobly worth mentioning that Half as interesting did just do a video about decomissioning a nuclear power plant. You should react to that.

[Vamparina]

The thing about heart rate is somewhat accurate especially for humans given that faster or slower heart rate over a long period of time ends up changing the shape and vessels of your heart which in turn affects your entire body given blood and oxygen comes from your heart. Which as a result affects life expectancy. People with higher than normal heart rate could develop heart failure even at a young age.

[ThereWasNoFreeName]

By the way doing a lot of cardio makes your heart muscle stronger and not only that, it's also makes your blood vessels better. On average trained person will have less beats a day than a healthy person doing moderate load work, and much less than an overweight/obese person. Do you know main cause of death for obese peoplpe? Mostly it's heart related issues, because heart rate is higher and constant load is higher, while doing lots of cardio has high load times and plenty time to rest.

[UsernameXOXO]

The heartbeat thing is about moving enough oxygen, and oxygen doesn't change in size.

[rams]

you should watch VFX artists shows true scale of a nuclear explosion

[RamenHutt]

I would argue that wasn't just srinking or enlarging an animal but scaling up or down with the same biology. If you actually just shrunk the matter present in a elephant to the size of a mouse it would probably end similar to the elephant sized mouse.
It is estimated that an average mouse has around 3 billion cells where as an average elephant has around 3 to 4 quadrillion cells.