Skip to main content

    • FREE SHIPPING on $50 Orders or More
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos
    • Essential STEM Tools: Plasma Ball STEM Thames & Kosmos

    Essential STEM Tools: Plasma Ball

    • STEM
    • Physics
    • Ages 14+

    Watch glowing plasma tentacles dance to your music.

    $29.95

    Marvel at the wonders of the universe with this mesmerizing electric light show! A high-voltage current from an internal Tesla coil ionizes gas inside the glass sphere, creating glowing tentacles that look like lightning from your fingertips. Learn about plasma, the fourth state of matter, found in every star. Switch to sound-activated mode and watch the arcs dance to your favorite music. USB-C or battery powered.

    Inside the manual

    Additional Info

    • Developed by educators and scientists
    • Step-by-step build instructions
    • Engaging illustrations throughout
    Download Manual

    What's in the Box

    • Piece Count: 2
    • 2 page manual

    Deeper Dive

    Marvel at the wonders of the universe with this mesmerizing electric light show. The plasma ball creates a fascinating display of glowing electric tentacles, like lightning flowing from your fingertips.

    Plasma is the fourth state of matter. Neither solid, liquid, or gas, it is a super-charged ionized gas found in every star. The plasma ball works by sending a high-voltage, alternating current from a Tesla coil at its core, through a noble gas, to the inner surface of the glass sphere. Escaping electrons cause the inert gas inside the sphere to light up, creating the amazing effects. You can actually see electricity in the palm of your hand with this incredible device.

    The plasma ball design allows you to display it on a tabletop or hang it on a wall like a sconce. It can be powered via a USB-C cable or batteries. Turn on the sound-activated mode and watch the plasma arcs dance to the beat of your favorite song.

    • Learn about electricity, matter, and energy.
    • Bring physics to life with electrifying experiments.
    • Interactive electricity light show
    • Features:
      • 5-inch glass sphere
      • Beautiful new design
      • Two modes: always-on and sound-activated
      • USB-C power port and cable included power adapter not included)
      • Also works with 4 AAA batteries (not included)
      • Hangs on a wall or rests on a tabletop
      • Safe to use. Follow all instructions and precautions.
    • Classic scientific device with a fresh new design
    • Battery or USB powered, ensuring maximum usage time

    Ages

    14+

    Experiments

    5

    Piece Count

    2

    Manual Pages

    2

    Product Dimensions

    5.2 x 9.7 x 5.7 in

    Product Weight

    1 lb

    Manual Dimensions

    5.5 x 8.25 in

    Batteries Required

    AAA (4) or USB power

    Country of Origin

    China

    Year Released

    2022

    Reviews

    Straight from real parents

    We envision a world where everyone loves to learn.

    Our products inspire kids and families to think deeper, play longer, and figure stuff out. 

    • Heritage Fuels Discovery

      Heritage Fuels Discovery

      With 200+ years of science publishing behind us, we've helped shape the STEM category worldwide. That heritage guides every product decision, from content development to quality standards.

    • Curiosity, Engineered

      Curiosity, Engineered

      We solve engineering problems most toy companies wouldn't attempt. GeckoBot climbs glass, Gecko Run builds marble runs on walls, and the Mega Cyborg Hand, a wearable hydraulic exoskeleton, was the #1-selling science toy in the US in 2025 (Circana).

    • Everyone's a Scientist

      Everyone's a Scientist

      We turn complex science and technology into fun, hands-on experiences for kids and families. From crystal growing to advanced robotics, we make the challenging feel approachable and the approachable feel exciting.