Heat and cold are two contrasting yet equally important properties and have their own unique benefits and relevance to various processes in the domestic and industrial sectors. Can you think of an example where you need a cold atmosphere in a hot climate? Well there are common examples of using an air conditioning system or a refrigerator to produces temperatures which are really cold. Despite the low temperatures produces by A.C. or refrigerators, have you ever wondered that how cold is “cold enough”? Well if you haven’t figured out let me tell you that according to the law of thermodynamics the lowest temperature which could never be achieved is that of absolute zero degrees which is equivalent to -273.15 degrees Celsius. But you might be surprise to know that though absolute zero cannot be obtained, it has been possible to reach very close to this temperature and the section below tells us more about this process.
In physics, cryogenics is the study of the production and behaviour of materials at very low temperatures (below −150 °C, −238 °F or 123 K). A person who studies elements that have been subjected to extremely cold temperatures is called a cryogenicist. Rather than the relative temperature scales of Celsius and Fahrenheit, cryogenicists use the absolute temperature scales. These are Kelvin (SI units) or Rankine scale (Imperial and US units). The term cryogenics is often mistakenly used in fiction and popular culture to refer to the very different cryonics.
So very many people will die before the advent of working rejuvenation medicine, largely from aging, and including many of you reading this now. The only viable option open to these folk iscryopreservation, the low-temperature storage of the brain and body after clinical death. This process can preserve the fine structure of the brain sufficiently well for plausible future technologies to revive a preservee; everything that makes you the person you are is in the structure of your brain. Preserve that, and you can wait as long as needed for the expanding future of medical nanotechnology - and even more advanced science beyond that - to develop the needed tools for revival.
Very low temperatures create conditions that can preserve tissue for centuries, possibly including the neurological basis of the human mind. Through a process called vitrification, brain tissue can be cooled to cryogenic temperatures without ice formation. Damage associated with this process is theoretically reversible in the same sense that rejuvenation is theoretically possible by specific foreseeable technology.Injury to the brain due to stopped blood flow is now known to result from a complex series of processes that take much longer to run to completion than the 6 min limit of ordinary resuscitation technology.Reperfusion beyond the 6 min limit primarily damages blood vessels rather than brain tissue. Apoptosis of neurons takes many hours. This creates a window of opportunity between legal death and irretrievable loss of life for human and animal subjects for cryopreservation with possibility of future resuscitation. Under ideal conditions, the time interval between onset of clinical death and beginning of cryonics procedures can be reduced to less than 1 min, but much longer delays could also be compatible with ultimate survival. Although the evidence that cryonics may work is indirect, the application of indirect evidence is essential in many areas of science. If complex changes due to aging are reversible at some future date, then similarly complex changes due to stopped blood flow and cryopreservation may also be reversible, with life-saving results for anyone with medical needs that exceed current capabilities. If you're interested in living to see the bright future of humanity, but unlikely to survive into the near-future era of rejuvenation medicine and enhanced longevity, then cryonics is the only practical way forward. Nothing in the laws of physics prohibits medical technologies capable of restoring a cryopreserved person to life and function - if the structure of the preserved brain is intact, it's just a matter of waiting.
Very low temperatures create conditions that can preserve tissue for centuries, possibly including the neurological basis of the human mind. Through a process called vitrification, brain tissue can be cooled to cryogenic temperatures without ice formation. Damage associated with this process is theoretically reversible in the same sense that rejuvenation is theoretically possible by specific foreseeable technology.Injury to the brain due to stopped blood flow is now known to result from a complex series of processes that take much longer to run to completion than the 6 min limit of ordinary resuscitation technology.Reperfusion beyond the 6 min limit primarily damages blood vessels rather than brain tissue. Apoptosis of neurons takes many hours. This creates a window of opportunity between legal death and irretrievable loss of life for human and animal subjects for cryopreservation with possibility of future resuscitation. Under ideal conditions, the time interval between onset of clinical death and beginning of cryonics procedures can be reduced to less than 1 min, but much longer delays could also be compatible with ultimate survival. Although the evidence that cryonics may work is indirect, the application of indirect evidence is essential in many areas of science. If complex changes due to aging are reversible at some future date, then similarly complex changes due to stopped blood flow and cryopreservation may also be reversible, with life-saving results for anyone with medical needs that exceed current capabilities. If you're interested in living to see the bright future of humanity, but unlikely to survive into the near-future era of rejuvenation medicine and enhanced longevity, then cryonics is the only practical way forward. Nothing in the laws of physics prohibits medical technologies capable of restoring a cryopreserved person to life and function - if the structure of the preserved brain is intact, it's just a matter of waiting.
Cryogenic – this is the use of low temperatures in biology and studying their effect on living forms and living cells and tissues. This also has a wide variety of applications and could include things such as freezing the eggs or sperms which can be used for later reproduction purposes and also for selective breeding. Another use which might seem far stretched as of now but might be a certainty in the future is the use of cryogenics for space travel. For example the universe is literally huge and it takes more than the lifespan of a human being to cross even a small portion of this universe. Scientists are carrying out studies whether low temperatures can be used to literally freeze human beings before sending them to space where they would just “break out” after centuries of travel just as young as they were at the beginning of the journey.
Power Transmission – currently modern cities are giant consumers of electricity which needs to be transported across large distances through overhead cables which are very difficult to place in dense cities. Yet underground cables have heating problems which can be solved to a great extent with the use of cryogenic coolants.
Power Transmission – currently modern cities are giant consumers of electricity which needs to be transported across large distances through overhead cables which are very difficult to place in dense cities. Yet underground cables have heating problems which can be solved to a great extent with the use of cryogenic coolants.