Jove
Visualize
Contact Us

Related Concept Videos

Mechanisms of Heat Transfer01:14

Mechanisms of Heat Transfer

Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.
Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
Mechanisms of Heat Transfer II01:20

Mechanisms of Heat Transfer II

In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
Mechanism of heat transfer01:19

Mechanism of heat transfer

Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
Physical Methods for Controlling Microbial Growth: Temperature01:23

Physical Methods for Controlling Microbial Growth: Temperature

Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
Heat Engines01:10

Heat Engines

A heat engine is a device used to extract heat from a source and then convert it into mechanical work used for various applications. For example, a steam engine on an old-style train can produce the work needed for driving the train.
Whenever we consider heat engines (and associated devices such as refrigerators and heat pumps), we do not use the standard sign convention for heat and work. For convenience, we assume that the symbols Qh, Qc, and W represent only the amounts of heat transferred...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Heat: man's exchanges and physiological responses.

Physiological reviews·2010
Same author

Clinical significance of hematologic changes in lead absorption and lead poisoning.

Occupational medicine·2010
Same author

Exposure to europium-activated yttrium orthovanadate: a cathodoluminescent phosphor.

Journal of occupational medicine. : official publication of the Industrial Medical Association·1968
Same author

EVALUATION OF AIR POLLUTION DATA.

Journal of the Air Pollution Control Association·1964
Same author

LASER--MEDICAL AND INDUSTRIAL HYGIENE CONTROLS.

Journal of occupational medicine. : official publication of the Industrial Medical Association·1963
Same author

Newer hazards from radiation.

Industrial medicine & surgery·1959
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Jun 14, 2026

In Situ Surface Temperature Measurement in a Conveyor Belt Furnace via Inline Infrared Thermography
07:03

In Situ Surface Temperature Measurement in a Conveyor Belt Furnace via Inline Infrared Thermography

Published on: May 30, 2020

Control of heat in industry

W MACHLE

    Occupational Medicine
    |March 19, 2010
    PubMed
    Summary

    No abstract available in PubMed .

    Keywords:
    HEAT/hygieneINDUSTRY AND OCCUPATION/hygiene

    More Related Videos

    Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer
    10:11

    Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

    Published on: April 19, 2021

    Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management
    06:43

    Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management

    Published on: November 21, 2017

    Related Experiment Videos

    Last Updated: Jun 14, 2026

    In Situ Surface Temperature Measurement in a Conveyor Belt Furnace via Inline Infrared Thermography
    07:03

    In Situ Surface Temperature Measurement in a Conveyor Belt Furnace via Inline Infrared Thermography

    Published on: May 30, 2020

    Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer
    10:11

    Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

    Published on: April 19, 2021

    Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management
    06:43

    Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management

    Published on: November 21, 2017