flash photolysis: meaning, definition, pronunciation and examples
Very LowHighly Technical / Scientific
Quick answer
What does “flash photolysis” mean?
A spectroscopic technique used to study fast chemical reactions, where a short, intense flash of light produces short-lived reactive intermediates.
Audio
Pronunciation
Definition
Meaning and Definition
A spectroscopic technique used to study fast chemical reactions, where a short, intense flash of light produces short-lived reactive intermediates.
In physical chemistry and molecular physics, it refers to the method and apparatus used to create and measure transient chemical species. The process involves a 'pump' flash to initiate the reaction and a 'probe' light source to monitor changes over very short timescales (nanoseconds to milliseconds).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Pronunciation of 'photolysis' may show slight variation.
Connotations
Identical scientific connotations in both varieties.
Frequency
Equally rare and specialised in both varieties, confined to photochemistry, atmospheric chemistry, and related research fields.
Grammar
How to Use “flash photolysis” in a Sentence
The [noun] was studied/investigated using flash photolysis.Flash photolysis of [compound] revealed [findings].The kinetics were measured by laser flash photolysis.Vocabulary
Collocations
Usage
Meaning in Context
Business
Not used.
Academic
Used exclusively in advanced chemistry, physics, and materials science research papers and textbooks.
Everyday
Not used in everyday conversation.
Technical
Core term in photochemistry and chemical kinetics for studying reaction mechanisms and short-lived intermediates.
Vocabulary
Synonyms of “flash photolysis”
Strong
Neutral
Weak
Vocabulary
Antonyms of “flash photolysis”
Watch out
Common Mistakes When Using “flash photolysis”
- Incorrectly writing 'flashphotolysis' as one word.
- Using 'flash photolysis' as a verb (e.g., 'We flash photolysed the sample').
- Confusing it with 'flash chromatography', a different separation technique.
FAQ
Frequently Asked Questions
It is used to generate and study short-lived reactive intermediates in chemical reactions, allowing scientists to understand reaction mechanisms on extremely fast timescales.
The technique was pioneered by British chemists Ronald George Wreyford Norrish and George Porter in the 1940s and 1950s, for which they shared the 1967 Nobel Prize in Chemistry with Manfred Eigen.
Laser flash photolysis is a more modern refinement using lasers as the light source, allowing for shorter, more intense, and more precisely timed flashes compared to the original technique using flash lamps.
Yes, it is widely used in biophysical chemistry to study processes like electron transfer in proteins, vision chemistry (rhodopsin), and the dynamics of photosynthetic reaction centres.
A spectroscopic technique used to study fast chemical reactions, where a short, intense flash of light produces short-lived reactive intermediates.
Flash photolysis is usually highly technical / scientific in register.
Flash photolysis: in British English it is pronounced /flæʃ fəʊˈtɒlɪsɪs/, and in American English it is pronounced /flæʃ foʊˈtɑːlɪsɪs/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: a camera FLASH lights up a scene for an instant; FLASH PHOTOLYSIS uses a light flash to 'see' extremely short-lived chemical events.
Conceptual Metaphor
A high-speed camera for chemical reactions, capturing molecular 'moments'.
Practice
Quiz
What is the primary purpose of flash photolysis?