Another version of this puzzle available here:
From Etsy: BUY NOW Two Marble Puzzle
From Amazon: BUY NOW: Two Marble Puzzle, or get this set of puzzles
Two Marble Puzzle: physics brain teaser- move both marbles to their top locations on each side simultaneously. The solution to this puzzle relies on some fun basic physics principles- can you figure out which ones? Swipe to reveal solution. Found this well made version of this classic physics puzzle at a gift shop in San Francisco (note Golden Gate Bridge motif).
Get this well crafted puzzle from Creative Crafthouse here:
From Amazon: BUY NOW Crossroads Four Marble Puzzle
From Etsy: BUY NOW Four Marble Puzzle
Four Marble Puzzle: physics brain teaser- move all four marbles to their corner locations simultaneously. Each slot slopes down towards the center such that the marbles tend to stay at the center- so, how would one get them to roll outward at the same time? The solution to this puzzle (like others featured here) relies on some fun basic physics principles. Answer below and swipe to reveal solution. A beautiful and well-made puzzle from Creative Crafthouse.
A nice version is curretnly available from this Etsy craft store:
From Etsy: BUY NOW: Impossible Nail
Impossible Nail: An eighteen-penny nail driven through the inner notches of a solid piece of wood. The wood was notched and the nail added- no glue used or cuts made, and the nail is solid and in one piece. Not impossible, but creating this does depend on the use of some amazing physical properties of wood. I won’t reveal the method here but a quick search on YouTube produces a few how-to videos showing the process.
From eBay: BUY NOW: Coin Escape Puzzle
From Amazon: BUY NOW: Coin Escape Puzzle
Another coin escape puzzle (fits US Dollar), the YOT:
From Amazon: BUY NOW
Silver Dollar Escape Puzzle
Coin Escape Puzzle: physics brain teaser- remove the coin without breaking the container or using any tools other than your hands. Of course you spin it to get the quarter out- but exactly how? The solution to this puzzle (like others featured here) relies on some fun basic physics of spinning things. Answer below and swipe to reveal solution.
Get one here:
From Amazon: BUY NOW Raketti Physics Puzzle
From eBay: BUY NOW Raketti Physics Brain Teaser
Raketti Puzzle: physics brain teaser- the challenge is to remove the cone topped cylinder from the hole without touching the bottom container. It can be done in a matter of seconds! The solution to this puzzle (like others featured here) relies on some fun physics principles. Answer below and swipe to reveal solution.
ORDER HERE : Shashibo Geometric Art
Shashibo Transformations: a rhombic dodecahedron transforms into a cube- two possible configurations of this amazing dissection puzzle. The Shashibo is a cube cut into 12 equal irregular tetrahedra- these pieces are connected symmetrically with hinges, and 36 hidden magnets then allow more that 70 stable and geometrically interesting configurations to be discovered- swipe to see few more.
Get the full version (8 disks made of wood) or the mini (6 disks, blue or red plastic):
From Amazon: BUY NOW TrueBalance Coordination Puzzle
TrueBalance: coordination challenge puzzle- get the six disks, connected by bearing swivels, into a vertical stack by only tilting the handle. Harder than it looks to get each disk’s center of mass above the one below at the same time into the unstable equilibrium final state. The swivels constrain the system, limiting the degrees of freedom, and allowing strange and interesting motion. Kinetic art as a toy!
From Creative Crafthouse: BUY NOW Pythagorean Puzzle
Pythagorean Puzzle: a proof, in physical form, of one of the most famous equations concerning the sides of any right triangle. The area of a square with side c of the hypotenuse is indeed equal to the sum of the areas of the squares of side a and b. This kit also allows at least two other ways to prove this theorem named after the famous Greek mathematician from 500 BC. One of the most used formulas when calculating vectors in physics classes ?
ORDER HERE : Shashibo Geometric Art
Shashibo Geometric Art: dissect a cube into 12 equal irregular tetrahedra, connect these pieces symmetrically with hinges, and add 36 magnets to create a device with more that 70 geometrically interesting and aesthetic configurations- a few are shown here. With practice the various transitions can flow very smoothly- this video are some of my initial explorations with this unique puzzle.
Another wonderful desing by BinDesign- get one here in black or natural wood:
From Etsy: BUY NOW: Bin Design Balancer Puzzle
Balance Stacking Sculpture: a series of torques in unstable equilibrium complete this Calder-esque structure. As each component is added its weighted end balances all the others before it, with the initial small piece weighing about a gram or so. Remove the end piece and the whole structure comes down. Another wonderful design by artist Bin Xu.
Mr. Evans makes a variety of amazing impossible bottle sculptures:
From impossiblebottle.co.uk: Buy NOW Impossible Bottles by Philip Evans
Nice Impossible bottles are often available on Etsy:
From Etsy: BUY NOW Impossible Bottles
Impossible Bottle Sculpture Puzzle: seemingly impossible, but created with clever engineering, this “impossible” bottle contains a padlock and full deck of cards still in the wrapper (a cut out in the side of the box reveals that all the cards are inside). The puzzle aspect is to consider how the bottle was produced (I personally have some theories- but I do not know the secrets of this artist). I can tell you with high certainty that the bottle was never cut or altered in anyway, and it was not somehow formed around the objects. This bottle by Phil Evans is one of the best I’ve seen.
This hard to find puzzle is sold as a magic trick here:
From magicorum.com: Bubble Puzzle
See more physics puzzles: featured physics based puzzles
Bubble Trouble Puzzle: physics brain teaser- the trick here is to move all air bubbles to the center bulb. As with all puzzles featured here on @physicsfun, the solution relies on some fun basic physics principles- can you figure out which ones? Answer below and swipe to reveal solution.
A similar puzzle (but taking advantage of horizontal symmetry) available here:
From Educational Innovations: BUY NOW Cylindrical Lens Puzzle
Cylindrical Lens Puzzle: this cylinder of acrylic acts as lens that focuses light along a line rather than a point- and thus it can invert an image along its symmetry axis. Puzzle question: the word "GREEN" is flipped by this lens but the word "TOMATO" seems unaffected. Is the physics significantly different for red wavelengths as compare to green? Or is there another explanation/trick? Answer below.
This puzzle was purchased in the 1990s, check back in a week or so as I hope to provide a source for these sand wand puzzles. Meanwhile, please see the next links and videos for other amazing physics puzzles you can own.
Wikipedia has a good introduction to the possible mechanisms of the Brazil nut effect
Magic Sand Wand Puzzle: this week’s physics brain teaser- move the steel ball through the sand to the other end of the tube. Amazingly it can be done in less than 6 seconds! Hint: spinning won’t help this time. The solution to this vintage puzzle relies on some interesting physics concerning granular convection. Answer below and swipe to reveal solution.
These laser cut hardwood geckos are available here:
From Etsy: BUY NOW Tessellating Geckos
Tessellating Geckos: MC Escher inspired lizard cutouts interlock precisely to tile a surface with no overlaps or gaps. Laser cut from maple, walnut, and cherry wood by maker/artist Craig Caesar and inspired by MC Escher’s “Study of Regular Division of a Plane with Reptiles” 1939. G4G week: Martin Gardner wrote about the art and math of Escher in 1961- which helped create the popularity that his work has experienced ever since.
Three models/colors to choose from:
From Amazon: BUY NOW Aqua Drop Puzzles
From eBay: BUY NOW: Aqua Drop Puzzle
Aqua Drop Puzzle: a superhydrophobic coating allows this dexterity puzzle to use a drop of water as the "pinball". The white surface is a silica nano-coating that makes water roll off- a condition sometimes referred to as the Lotus effect because leaves of the Lotus plant have this property.