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Related Concept Videos

Cryo-electron Microscopy01:28

Cryo-electron Microscopy

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Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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Sublimation01:03

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Sublimation is the direct transformation of a solid to a gaseous state. For instance, at standard pressure and room temperature, solid carbon dioxide sublimes to gaseous carbon dioxide. The phase diagram depicts the conditions required for sublimation. This process occurs at the solid-gas phase boundary and is not observed above the triple point of the substance. The reverse of sublimation is called deposition, where a gaseous substance condenses directly into a solid. Sublimation and...
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A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
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Psychosurgery, the surgical alteration or permanent removal of brain tissue to alleviate severe psychological conditions, stands as one of the most radical and controversial treatments in the history of mental health care. Its development and application have evolved significantly, marked by dramatic shifts in scientific understanding and ethical perspectives.
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Related Experiment Video

Updated: Nov 19, 2025

Cryogenic Sample Loading into a Magic Angle Spinning Nuclear Magnetic Resonance Spectrometer that Preserves Cellular Viability
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Cryonics: Science or Religion.

Simon Dein1

  • 1Queen Mary College, University of London, London, UK. s.dein@ucl.ac.uk.

Journal of Religion and Health
|February 1, 2021
PubMed
Summary

Cryonics, the freezing of bodies for future reanimation, lacks scientific evidence. This study argues cryonics relies on faith, not empirical data, offering a form of secular transcendence over death.

Area of Science:

  • Cryonics
  • Medical Ethics
  • Philosophy of Science

Background:

  • Cryonics offers low-temperature preservation of human corpses for potential future reanimation.
  • Advocates view cryonics as a medical treatment, necessitating scientific validation.

Purpose of the Study:

  • To examine the scientific basis of cryonics.
  • To evaluate the evidentiary support for cryonics claims.
  • To analyze the conceptualization of death within cryonics.

Main Methods:

  • Review of scientific literature on cryogenic preservation.
  • Analysis of philosophical arguments regarding information-theoretic death.
  • Examination of claims made by cryonics proponents.

Main Results:

Keywords:
CryonicsDeathReligionScience

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  • Cryonics is founded on assertions lacking empirical scientific demonstration.
  • The concept of 'information-theoretic death' is central to cryonics advocacy.
  • Cryonics is characterized as performing 'religious work' through its promise of transcendence.

Conclusions:

  • Cryonics lacks a demonstrable scientific foundation.
  • The practice is based on faith rather than verifiable scientific evidence.
  • Cryonics provides a secular means of confronting mortality and seeking transcendence.