Photochemistry

From WikiMD.com - Food, Medicine & Wellness Encyclopedia

Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to denote the events that occur in the presence of light, but it also includes the chemical reaction of light, which is known as photophysics.

Overview[edit | edit source]

Photochemistry involves the absorption of light by atoms or molecules, leading to a series of chemical reactions. The absorbed light is usually in the visible or ultraviolet part of the electromagnetic spectrum. A molecule, or small atomic particle, will absorb a quantity of light and jump to a high energy state. The energy absorbed can result in the breaking of chemical bonds, and the creation of new bonds. This process is responsible for the production of ozone in the Earth's stratosphere, and the process of photosynthesis in plants.

Laws of Photochemistry[edit | edit source]

The laws of photochemistry, first outlined by Theodor Grotthuss and Christian Ehrenberg, state that only the light absorbed by a molecule can be effective in producing a photochemical reaction and that for each photon of light absorbed by a chemical system, only one molecule is activated for a photochemical reaction.

Applications[edit | edit source]

Photochemistry has many practical applications, including photodynamic therapy, the use of light to kill cancer cells, and photolithography, the use of light to create patterns on a semiconductor surface.

See also[edit | edit source]

References[edit | edit source]


WHO Rod.svg
This article is a medical stub. You can help WikiMD by expanding it!
PubMed
Wikipedia
WikiMD
Navigation: Wellness - Encyclopedia - Health topics - Disease Index‏‎ - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes

Transform your life with W8MD's budget GLP1 injections from $125

W8mdlogo.png
W8MD weight loss doctors team

W8MD offers a medical weight loss program NYC and a clinic to lose weight in Philadelphia. Our W8MD's physician supervised medical weight loss centers in NYC provides expert medical guidance, and offers telemedicine options for convenience.

Why choose W8MD?

Book Your Appointment

Start your NYC weight loss journey today at our NYC medical weight loss, and Philadelphia medical weight loss Call (718)946-5500 for NY and 215 676 2334 for PA

Search WikiMD

Ad.Tired of being Overweight? Try W8MD's NYC physician weight loss.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available. Call 718 946 5500.
Advertise on WikiMD

WikiMD's Wellness Encyclopedia

Let Food Be Thy Medicine
Medicine Thy Food - Hippocrates

Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.

Contributors: Prab R. Tumpati, MD