How to Make a Visible Laser Beam

High-intensity laser lights create visually enchanting performances.
••• Jupiterimages/ Images

A laser, no matter how powerful, is a beam of concentrated light projected from an emitter source. Although the laser is made up of light, it is typically only visible when it touches another object. Because the air normally doesn’t have large enough particles to make the laser visible, you need to add some sort of material to the atmosphere to make the laser appear to be a continuous beam.

    Power on the laser and point it at an object across the room. Set it down on a sturdy surface to prevent it from rolling away. If the laser does not stay on automatically, you may need to wrap tape around the power button to keep it on.

    Coat two chalkboard erasers thoroughly with chalk. If you do not have chalk erasers, you can cover your hands with the chalk. White chalk is the best to use because it doesn’t interfere with the laser’s color.

    Clap the erasers (or your hands) along the path of the laser. As the light from the laser strikes the chalk dust particles, the laser beam becomes visible.

    Continue applying dust and clapping along the path of the laser to keep the laser beam visible.

    Things You'll Need

    • Laser pointer
    • Tape
    • Chalk
    • Chalkboard erasers


    • Avoid pointing the laser in the direction of anyone's face. If a laser comes into direct contact with the pupil, it can cause damage. Most laser pointers are not powerful enough to cause serious issues, but it is best not to take a chance where safety is concerned.

Related Articles

How to light a match with Green Laser Pointer
How to Diffuse a Laser Beam
Experiments With a Magnifying Glass
How to Make Fake Stained Glass
How to Use the Bushnell Telescope 78-9512
How to Do a Science Project on Fingerprints
How to Make a Hologram Projector
How to Make Saturn's Rings for Science Projects
How to Produce Static Electricity
Science Project: How to Make a Prosthetic Hand
How to Make a Homemade Hygrometer
How to Wire a Piezo Buzzer
The Use of Phosphorous in Light Bulbs
How to Make Glowing Water Without a Black Light
Are There Warning Signs Before a Dust Storm Occurs?
Materials That Absorb Infrared Rays
How to Lighten the Screen on a Texas Instruments TI-85...
How to Measure a Micron
How to Make Smoke With Mineral Oil
How to Test UV Bulbs

Dont Go!

We Have More Great Sciencing Articles!