Fill ¾ of the bottle or jar with vegetable oil and the rest of the bottle or jar with water. Do not mix. Add several drops of food coloring until the water becomes a dark shade of the color. Cut the Alka-Seltzer™ tablet into small pieces (about 8). Drop one of the small pieces of Alka-Seltzer™ into the bottle. In a moment, you will see the mixture start bubbling and moving. Shine your flashlight through the bottle from behind and watch the magic. When the bubbling subsides, drop in another piece of Alka-Seltzer™and the show will begin again.
The lava lamp has been around for decades. You may even remember when they first became popular during the “psychedelic” ‘60s.
Known by many as a “mood light,” the lava lamp doesn’t actually cast much light at all. But they sure are mesmerizing and entrancing to watch. It is so easy to become hypnotized by the colors and shapes as they fragment, quiver, and move around the lamp.
You can still buy a lava lamp today, of course, but did you know you can make your own? The secret behind the lava lamp is based on the fact that oil and water do not mix. The magic of the lava lamp is really as simple as that. To create the mystifying illusion for yourself, have fun following the recipe below.