Laser-induced fluorescence is when scientists use a special kind of light, called a laser, to make a substance shine brightly. It's like turning on a light switch, but instead of using a regular light bulb, they use a laser.
Here's how it works:
Scientists choose a substance they want to study, such as a certain kind of molecule. They shine the laser on the substance, which causes the molecules to get excited and start to glow.
This glowing is what scientists call fluorescence. The laser helps the molecules glow much brighter than they normally would. Scientists can use this fluorescence to study the substance in more detail.
One way they use laser-induced fluorescence is in medicine to detect cancer cells. They can use a special dye that binds to cancer cells, then shine a laser on the area to make the dye glow. This helps doctors see exactly where the cancer cells are so they can be removed.
Overall, laser-induced fluorescence is a way for scientists to make substances glow brightly so they can study them in more detail.