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Related Concept Videos

Biological Effects of Radiation02:59

Biological Effects of Radiation

All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they produce ions...
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Dose-Response Relationship: Overview

Agonists can bind with and activate receptors, resulting in the formation of drug-receptor complexes. Once formed, these complexes catalyze many biochemical processes at the cellular level and subsequently induce a pharmacologic response. The degree of response is directly proportional to the fraction of activated receptors, which in turn, depends on the concentration of the drug at the receptor site as well as the sensitivity of the receptor. An increase in the administered dose contributes to...
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Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
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Radiation: Applications01:17

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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
Radiation Pressure: Problem Solving01:09

Radiation Pressure: Problem Solving

The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
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Absorption of Radiation

The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:

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Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities
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From Knowledge Gaps to Trust: Investigating Public Views on Low-dose Radiation.

Lekhnath Ghimire1,2, Charisse Vitto2, Tanushree Das3

  • 1Department of Energy and Nuclear Engineering, Faculty of Engineering and Applied Science, Ontario Tech University.

Health Physics
|June 4, 2026
PubMed
Summary

Public understanding of low-dose radiation (LDR) is shaped by misconceptions and media influence. Improving LDR communication requires transparency, empathy, and tailored information to build public trust.

Keywords:
health effectslow-levelradiationradiation safetyrisk communication

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Area of Science:

  • Public Health Communication
  • Risk Perception
  • Science Communication

Background:

  • Public understanding of low-dose radiation (LDR) is often limited by misconceptions.
  • Factors influencing public perception include media portrayals, trust in science, and personal experiences.

Purpose of the Study:

  • To examine public perceptions, misconceptions, and informational needs regarding LDR.
  • To identify barriers and facilitators to effective LDR communication.

Main Methods:

  • Qualitative analysis of eight focus groups conducted in November 2024.
  • Discussions covered trust in science, perceived risk, media influence, and expert communication.

Main Results:

  • Participants frequently conflated LDR with high-dose radiation and nuclear accidents.
  • Distrust in industry-funded research and conflicting media narratives contributed to uncertainty.
  • Trust in scientific authority was conditional, favoring academic and government research.
  • Risk perception varied, with some participants showing shifts in understanding after expert presentations.

Conclusions:

  • Effective LDR communication necessitates transparency, emotional resonance, and audience-specific strategies.
  • Recommendations include utilizing trained science communicators and multimedia platforms.
  • Targeted communication and research transparency are crucial for informed public discourse on LDR.