Fluorescein Properties and Applications

The video discusses the properties of fluorescein, a molecule that absorbs light at wavelengths we can't see and emits it in visible green. A demonstration with a black light shows how fluorescein works. The video also covers common uses, such as in highlighters, and its safety, noting that it's non-toxic and used in medical exams. Creative applications in art are also mentioned.

What is the unique property of fluorescein that makes it interesting?

• It absorbs light in a visible wavelength.

• It releases light in a wavelength we cannot see.

• It absorbs light in a wavelength we cannot see and releases it in a visible wavelength.

• It does not interact with light at all.

What happens when fluorescein is exposed to a black light?

• It absorbs all light and becomes dark.

• It changes to a different chemical.

• It releases light in a green color.

• It becomes invisible.

Which common item uses fluorescein to enhance visibility?

• Sunglasses

• Highlighter pens

• Magnifying glasses

• LED lights

Why is fluorescein considered safe for use in medical applications?

• It is a natural compound.

• It is very expensive.

• It is non-toxic.

• It is highly reactive.

How do some people use fluorescein creatively?

• To paint their houses

• To create patterns on their skin

• To dye their hair

• To color their clothes