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pressurized oxygen has different effects on your breathing/vascular system ?
At sufficiently high partial pressure, it's toxic. https://en.wikipedia.org/wiki/Oxygen_toxicity Nitrogen becomes narcotic at high pressure; breathing normal air at 30m is like being tipsy, but below 90m it can be fatal. https://en.wikipedia.org/wiki/Nitrogen_narcosis
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Flash freezing (using liquid nitrogen to freeze something really quickly) is used successfully for smaller objects, such as frozen berries and frozen vegetables that you can buy at the grocery store. The Wikipedia page on flash freezing links to this [0] site with some more discussion. The Wiki page also says that flash freezing still can take a few hours, so there are still ice crystals created, but a lot less/small…
Even speaking as a brit, your mixture of metric and imperial and metric fascinates me. I personally would've written 150lb, 6'6 tall, 1ft deep, 37 to 0 degrees
What is really interesting is that at depths below 65m the real danger isn't running out of air, but that air itself becomes toxic due to the higher partial pressure of oxygen and it's effect on the nervous system. Tech and commercial divers breathe exotic air mixtures which are hypoxic and include helium to mitigate this. Dive science is pretty fascinating and is still a developing field.
pressurized oxygen has different effects on your breathing/vascular system ?
For deep dives I really enjoy the planning phase, it requires a high degree of technical expertise and a thorough understand of your bodies physical limits.
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Recreational dive limits are usually set at about 100 - 130ft (30 - 40m) depending on the training standards in use.
The beginning certification level is 60 feet. You unlock the deeper limit after additional training, and it includes performing a three-minute "safety stop" at 5 meters. 60 feet is about as deep as you want to shoot to the surface from (and if memory serves the limit they give in training is 30 feet, or 2 atmospheres).
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pressurized oxygen has different effects on your breathing/vascular system ?
Calculating your maximum operating depth and the time you can spend there before experiencing oxygen toxicity is an important part of advanced diving training. For deep dives I really enjoy the planning phase, it requires a high degree of technical expertise and a thorough understand of your bodies physical limits.
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> So if you're claiming that cryonics has "a snowball's chance in hell" of working, then I presume that either you are (1) ignorant of the science, or (2) making some sort of statement about long-term storage prospects or the credibility of the organizations involved. I'm signed up to be a cryonics patient when I die, but yeah, the chances are pretty much nil. Personally, I'll take a slightly diminished bank account…
What I don't understand about this logic is, how do you have any confidence that if by some miracle you were brought back to conscious life again, your life wouldn't be an absolute living hell (organ damage, paralysis, etc.)? Like even if you had infinite money and resources to spend on whatever you wanted, would that risk be sitll worth it to you?
Cryonics is ultimately a bet on future technology and future humanity.
The documentary is on Netflix, it's worth a watch: https://www.netflix.com/watch/80215139
What's the documentary called, so I can find it by other means please?
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Calculating your maximum operating depth and the time you can spend there before experiencing oxygen toxicity is an important part of advanced diving training. For deep dives I really enjoy the planning phase, it requires a high degree of technical expertise and a thorough understand of your bodies physical limits.
Do you use a rebreather at all?
Also the complexity of rebreather equipment is much higher than traditional scuba diving, so the risk of failure while underwater is much greater.
It is amazing tech though, if the price comes down by half it may become realistic for me.