Newton's Cradle — Executive Desk Physics Demonstrator
US standard shipping is $8. Free at $60; this item is $30.05 below the threshold.
US standard shipping is $8, or free at $60+. Express is $15 when available. Taxes and final methods are shown before payment. See shipping terms.
Complete the set
Newton's Cradle — Executive Desk Physics De...
This kit
$29.95
Discount applied automatically at checkout
- Free US standard shipping over $60
- US shipping at launch
- 30-day eligible returns
- Checkout hosted by Shopify
Most unused, unassembled items can be returned within 30 days; see the refund policy for eligibility.
Delivery & Returns
Delivery
- We currently accept orders shipping to US addresses.
- Standard shipping is $8 under $60 and free on orders of $60 or more.
- Express shipping is $15 when it is available for the order and destination.
- See the shipping policy for current terms; carrier dates are estimates, not guarantees.
Returns
- Most unused, unassembled items are eligible for return within 30 days of delivery.
- Customers pay return shipping for change-of-mind returns; damaged, defective, or incorrect items are handled at no extra cost.
- Read the refund policy for exclusions, approval steps, and return-shipping responsibility.
About this piece
Lift one ball, let it drop, and watch momentum ripple across the row in that endlessly satisfying click-click-click. It's the desk classic that turns a stressful afternoon into a thirty-second reset — and quietly teaches physics while it's at it.
- Hypnotic by nature. Conservation of momentum, demonstrated on loop, right at your fingertips.
- A built-in pause button. One gentle push and your mind gets a moment to breathe.
- Polished and precise. Smooth steel balls hung in even alignment for a clean, true swing.
- Looks the part. A tidy executive-desk piece that's as much decor as it is demo.
Specs
- Steel balls on a balanced frame
- Base colours: Black or Red
- Sizes: compact (9 x 7.5 x 9.5 cm) or large (23 x 14 x 17 cm)
Perfect for the office desk, a STEM-curious kid, or an easy, under-$50 gift for him.
Questions before you buy
How do I know whether this is right for me?
Start with the ‘Why it earns its place’ summary, then check the selected option and product details. Difficulty, tools, contents, and age guidance vary by item. If a fact you need is not listed, contact us before ordering and we’ll help you verify it.
Where can I check size and what is included?
Verified dimensions, contents, materials, and power requirements appear in the product details when supplied. We do not estimate missing specifications; ask us to verify any missing detail before purchase.
How do I choose the correct option?
Use the option buttons above the Add to cart button and check the selected name, image, price, and availability before ordering. Choose only the option that matches the version you want.
How long does shipping take?
We currently ship to US addresses. Standard shipping is $8 under $60 and free at $60 or more; express is $15 when available. Processing and delivery timing varies by product, and carrier dates are estimates. See the current shipping terms.
What if I change my mind?
Most unused, unassembled items are eligible for return within 30 days of delivery. Change-of-mind return shipping is the customer’s responsibility. Contact us before sending anything back and review the refund policy for exclusions and instructions.
Product reviews from our previous storefront
Transparency note: these reviews were originally collected from customers who bought the same products through our previous storefront.
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★★★★★
Joyyo cost-effective Dingho and ff8kuyif69buduviguf8d85d9yfpuvpuvpjvohpufpucpufpff8kuyif69buduviguf8d85d9yfpuvpuvpjvohpufpucpufp
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★★★★★
It arrived with a defect, but the solution is already being processed. Thank you. It is a beautiful object.
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★★★★★
It’s small and cute. Quality is amazing and worth for the price. Suitable for work desks.
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★★★★★
Arrived so quick. It's mini version but they are practical. My kids so enjoyed with this
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★★★★★
It arrived very well, I have no complaints. The important thing is that it is used :)
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★★★★★
The product came very well and arrived ahead of time. It's very good, to be honest.
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★★★★★
Even though the frame is plastic, the balls are metal but it looks of good quality.
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★★★★★
What you buy is exactly what you receive, it arrives in perfect condition.
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★★★★★
It arrived very quickly. It's just smaller than it looked in the photos.
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★★★★★
Everything was fine, the item arrived on time and without any problems.
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★★★★★
Decorative item, I don't use it much, so it was very worth it for me.
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★★★★★
I have received my order, it would be nice if it was a bit bigger 😁.
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★★★★★
Excellent desktop decor It is already the second one that I bring
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★★★★★
Everything is ok as described. Performing ok. Interesting gadget.
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★★★★★
everything arrived, everything is fine only))) it's very small.
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★★★★★
Beautiful and high-quality but very small! Dimensions 9x9 cm
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★★★★★
Everything went well, thank you and gladly again 👍 👍 👍
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★★★★★
The product is too simple, but it arrived well packaged.
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★★★★★
Thought it would be better, well for 30 UAH it will do.
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★★★★★
arrives in perfect condition good quality and price
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★★★★★
Product is the same as advertised, I recommend.
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★★★★★
I thought it was slightly bigger but it's fine.
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★★★★★
Je fais que la regarder depuis que je la reçue
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★★★★★
Nice, small desk ornament for my kids room.
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★★★★★
It arrived on time and was well-packaged!!
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★★★★★
Great toy. Well secured during transport.
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★★★★★
Arrived well packaged and as advertised.
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★★★★★
Its size is unexpected but it's nice.