When a sample of hair contains certain chemicals, it will absorb some of the light and then reemit light of a different color. This is called:
A. Fluorescence
B. Incandescence
C. Effervescence
D. All of the above
Answer:A
When a sample of hair contains certain chemicals, it will absorb some of the light and then reemit light of a different color. This is called:
A. Fluorescence B. Incandescence C. Effervescence D. All of the above
Explanation: When a sample of hair contains certain chemicals, it will absorb some of the light and then reemit light of a different color. This phenomenon is called fluorescence. Fluorescence occurs when a molecule absorbs energy from light and is then excited to a higher energy state. When the molecule returns to its original state, it emits light at a longer wavelength than the original light source. Different chemicals can produce different fluorescent patterns, and fluorescence microscopy can be used to detect and analyze these patterns in hair samples.