Jove
Visualize
Contact Us
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 Concept Videos

Color Vision01:24

Color Vision

553
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
553
Changes in Skin Color: Clinical Perspectives01:14

Changes in Skin Color: Clinical Perspectives

1.9K
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
1.9K
Colors and Magnetism03:02

Colors and Magnetism

11.6K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.6K
Pigmentation01:19

Pigmentation

2.4K
The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
Melanin occurs in two primary forms: eumelanin that provides black and brown pigment and pheomelanin that provides red color. Dark-skinned individuals produce more melanin than those with pale...
2.4K
Fixation and Sectioning01:03

Fixation and Sectioning

4.3K
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
4.3K
Mortar01:29

Mortar

209
Mortar, a mixture of Portland cement, hydrated lime, sand, and water, is a crucial binding material in construction. Its primary function is to join masonry units together, filling gaps and ensuring a uniform distribution of weight across the structure. This helps in preventing potential weaknesses. Mortar also serves as a protective barrier against environmental elements such as water and wind, thereby safeguarding the interior of the structure. It also compensates for surface irregularities...
209

You might also read

Related Articles

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

Sort by
Same authorSame journal

Academic Freedom in Decline: When scientists can't research what they want, innovation suffers.

Scientific American·2026
Same author

The Burden Rises : Chronic kidney disease has a wide variety of causes, and its numbers are increasing.

Scientific American·2026
Same author

A Closer Look at 29 Theories of Consciousness: The many, many ways researchers hope to solve the toughest mystery in science.

Scientific American·2026
Same author

Battle of the Breeds : A large dataset shows that some dog stereotypes are based in reality, and others might be unfair characterizations.

Scientific American·2026
Same author

The Growing Global Burden: The autoimmune disease impacts millions of people worldwide, with some underserved communities bearing the brunt.

Scientific American·2025
Same author

A Multipronged Assault: A new understanding of Alzheimer's is leading to a variety of new treatment approaches.

Scientific American·2025
Same journal

50, 100 & 150 Years: Natural fission reactor uncovered; geometry of soap bubbles.

Scientific American·2026
Same journal

Robots Can Now Fold Your Laundry: Home-helper tasks are becoming easier for robotic assistants.

Scientific American·2026
Same journal

Journey to Titan: Inside NASA's Dragonfly mission to Saturn's largest moon.

Scientific American·2026
Same journal

Getting Pesticides Off Fruits and Veggies: Using more than water to wash produce can clean pesticide residues.

Scientific American·2026
Same journal

How Probability Theory Got Its Start: Disagreement over how to divvy up the pot in an interrupted game of chance led early mathematicians to invent modern risk assessment.

Scientific American·2026
See all related articles

Related Experiment Video

Updated: Jun 21, 2025

Training Synesthetic Letter-color Associations by Reading in Color
10:27

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 20, 2014

22.8K

Covering Color

Jen Christiansen, Nicholas Rougeux

    Scientific American
    |July 17, 2024
    PubMed
    Summary

    No abstract available in PubMed .

    More Related Videos

    Visualizing Visual Adaptation
    04:43

    Visualizing Visual Adaptation

    Published on: April 24, 2017

    8.9K
    Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
    07:05

    Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

    Published on: June 18, 2021

    2.4K

    Related Experiment Videos

    Last Updated: Jun 21, 2025

    Training Synesthetic Letter-color Associations by Reading in Color
    10:27

    Training Synesthetic Letter-color Associations by Reading in Color

    Published on: February 20, 2014

    22.8K
    Visualizing Visual Adaptation
    04:43

    Visualizing Visual Adaptation

    Published on: April 24, 2017

    8.9K
    Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
    07:05

    Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

    Published on: June 18, 2021

    2.4K