The Newton gravity glass is an awesome desk-topper and a question-generating educational tool. When the cylinder is flipped, the sand within the hourglass moves down while the hourglass itself floats up.
The hourglass inside the cylinder measures 2 minutes of time with either blue, magenta, or purple color sand. A perfect corporate gift!
The two (2) 2-Minute Newton Gravity Timers I purchased both look good and work as expected. The staff was also helpful.
An unusual version of the 2 min. hour glass. It works differently than you might expect. Makes a fun desk top addition.
There is aperture(?) piece sticks out from the side of gravity glass timer.
When I ordered I was under the impression that the hourglass inside the liquid would take 2 minutes to go from the bottom of the tube to the top of the tube when the timer was flipped.
This is the behavior I had seen in another Gravity Timer. Therefore I was very disappointed in the product. Just having an hourglass inside liquid is not fascinating. As I result I did not give it as intended as a gift to my grandson.
** UPDATE from JustHourglasses: Based on this customer's feedback we have clarified the description of the product.
I did receive the product quickly and in good shape.
Product was just as shown on website. This was for a gift and giftee was delighted.
Delivered in a timely manner.
Filled with vibrant red sand this is a heavy, substantial piece. The hourglass is encased in acrylic, protecting it from breaking, making it an ideal gift for children (or children...
Newton's Gravity Glass is a sand-filled hourglass suspended in a liquid-filled glass cylinder. Measures 3 minutes of time with either blue, yellow, or purple color liquid. A perfect corporate gift!...
Newton's Gravity Glass is a sand-filled hourglass suspended in a liquid-filled glass cylinder. When the cylinder is flipped, the sand within the hourglass moves down and the hourglass itself floats...