EISCO Hand Crank Van de Graaff Generator, up to 100kV - Static Electricity Generator, Hand Generator - 7.5" Dome, 4" Discharge Sphere, 22" Tall

I use this Van de Graaff generator in my high school physics classroom, and it’s been a huge hit with students. The build quality is solid, the dome size is perfect for visual demonstrations, and it produces plenty of voltage for hair-raising effects—even in a larger room. We’ve used it to show static electricity, sparks, and charge transfer, and it performs beautifully every time. With a little practice (and dry air!), it can easily make a student’s hair stand up and generate impressive arcs to the discharge wand. It’s safe, easy to operate, and durable enough for repeated classroom use. This is hands down one of the most engaging and memorable demos I’ve added to my science toolkit. Highly recommended for teachers who want their students to feel the power of physics!

Great quality, sturdy, and easily-to-see components. This unit will make substantial sparks. Very impressive to the grandkids. Be ready for a painful bite if you are not careful... I wasn't sure if it was a mistake getting a hand-cranked model (versus motor-operated). But it is very simple to operate and does not require a cord. In some ways, it's better. Just a few turns produce a significant charge. It has already seen a lot of service with no signs of wear and tear. Highly recommend PS The "Electrostatics Kit, 7 Pieces - Designed to be Used with Eisco Labs Van De Graaff and Wimshurst Machines" is a great addition.

What a remarkable thing to have in your home! In its own way, it has become the centerpiece of my studio apartment, perched atop my wizarding shelf, ready to demonstrate the wisdom of why High Voltage / Low Current demonstrations are best achieved with hand-cranked devices. See? It's all about building-up a charge, and using a powered Van De Graaf Generator always felt a little hokey to me for educational purposes. Just about their only purpose is to make your hair stand on end. But a hand-cranked one... oh, that shows you exactly how you can build up a charge. Next to a plasma ball, it makes a pretty spectacular double-lightning bolt light-show effect, but it will blow out the plasma ball's electronics :-)

Minimal assembly required lots of fun for kids

I'm impressed with the quality of the generator. It seems quite sturdy and worked well right out of the box. The pulleys are well aligned and handle turns the belt well. I was easily able to charge up the top sphere with about 10 turns of the handle to where it was discharging into the air. I could pull about an 1 1/2 -3 inch spark from top sphere to the sphere on the wand . It came well packed so there was no shipping damage.

A little wimpy on power. It is well constructed and works fine, just wasn't as powerful as I'd hoped.

Cumplió todas las expectativas

I must say even though the delivery charge is expensive, it came in excellent time. The product is for my first science fair and I'm extremely happy with it. Thanks

This company has an epic catalogue of electrostatics gear. Very hard to find elsewhere.