Tungsten Black Hole Model
Tungsten Black Hole Model
- New Packaging
Item #089
If you compress any amount of mass, it becomes denser. If you compress it enough, it will become so dense that light can no longer escape it—this size is the object’s Schwarzschild radius. An object that is compressed smaller than this radius is a black hole.
This tungsten sphere has been engineered to have exactly the same radius as the Schwarzschild radius of Earth. If you compressed all of the mass of Earth into the volume of this tiny sphere, it would be so incredibly dense that you would not even be able to see it.
This sphere is a great aid for comprehending the scale of black holes and their extreme density. Made of tungsten, one of the densest elements in the universe, to help illustrate the high density of such an object. Also makes a great tungsten sample (W, 74) for element collectors.
Every object has a Schwarzschild radius proportional to its density: the Sun's is 3km, Jupiter’s is 2.62m, and a hamburger’s is smaller than a single atom. Karl Schwarzschild derived this property in 1915 using Einstein’s recent field equations.
Derivation (pdf)
Radius: 8.87 mm
Weight: 53.34 g
Density: 18.5 g/cc
Our model was recently used as a visual aid in a lecture on black holes by renowned astrophysicist Brian Greene! (Featured around 22:54, but we recommend the whole lecture!)
- Detailed Info Included
- Display Stand
- Protective Storage Box
Matter Subscriber Price:
Collections containing this item:
Bestsellers
|
Element Samples
|
Matter Items
|
Newest Listings
|
Outer Space
|
Physics
|
Physicsfun
|
Stemcell Catalog
|
Wholesale Products
|
AUTHENTICITY GUARANTEED
We only list 100% verified authentic items. We work with reputable collectors, and regularly consult with our network of scientists and experts.
-
Free Shipping
Orders ≥$50 qualify for free US shipping
Orders ≥$100 qualify for free global shipping -
Secure Payments
Pay how you like: credit card, PayPal, After Pay, Shop Pay, Venmo, Apple/Google/Meta Pay & crypto
-
Simple Returns
Change your mind? No problem. Enjoy easy returns within 30 days.
Like the title indicates. This is a no brainer desktop item that does absolutely nothing. I digress however, it is freaking awesome. Not only is it made out a unique and cool metal, good ole Wolfram or Tungsten, it illustrates something that is truly mind bending. You are holding a black hole, and this if you can appreciate scale, ( spend some time on google Earth, it can be fun ) is what so remarkable about the object. Tungsten really conveys density well here too, as it is heavier. Tis a shame uranium can be dangerous, it would help do this better.
Thank you for the concept and item.
I'm very happy with this purhase. Thank you.
This makes a awesome birthday present!!
The black hole model was of great quality. It was a wonderful gift for our son who loves Science. A fabulous conversation starter while being displayed on his desk. The Science lover will enjoy this one.
Great gift for our son who is very interested in Science.
Really cool little thing to have in my science classroom. My students thought it was really cool once I explained what it was