Rubik's Clock is a puzzle created by Ernő Rubik, the inventor of the original Rubik's Cube. It consists of a 3x3 grid of clocks, each clock representing an hour. The objective of the puzzle is to align all the clocks to show the same time, typically 12:00. The puzzle features a series of discs that can be rotated to change the position of the clock hands.
Rubik's 360 is a puzzle designed by Ernő Rubik, the creator of the original Rubik's Cube. Released in 2011, the Rubik's 360 is a three-dimensional puzzle that consists of a spherical shell containing smaller balls. The objective of the puzzle is to maneuver and rotate the outer shell to get all the colored balls to the corresponding colored slots at the bottom of the sphere.
The Pyramorphix is a type of puzzle that is a variant of the Rubik's Cube and similar to other twisty puzzles. It is a geometric shape made from pyramid-like structures that can rotate around its vertices. The puzzle typically consists of a combination of triangular and square faces, and the challenge lies in twisting and turning the pieces to achieve a consistent color pattern on each face.
The Pyraminx Duo is a type of twisty puzzle that is a variation of the traditional Pyraminx puzzle. Unlike the standard Pyraminx, which has pyramid-shaped faces and multiple layers that can be turned, the Pyraminx Duo features a simpler mechanism and design. The main characteristic of the Pyraminx Duo is that it consists of two triangular-shaped pieces that rotate around a central axis.
The Pyraminx Crystal is a type of twisty puzzle that is a variation of the Pyraminx, a popular tetrahedron-shaped puzzle. The Pyraminx Crystal has a more complex geometric design, consisting of a larger number of smaller faces compared to the original Pyraminx. It is often characterized by its crystal-like appearance and intricate movement mechanics.
The Pyraminx is a type of puzzle that resembles a tetrahedron, or a pyramid shape. It is a three-dimensional, twisty puzzle that consists of four triangular faces, each divided into smaller triangles that can be rotated. The objective of the Pyraminx is to scramble the colors and then return it to its original state, where each face of the puzzle is a solid color.
A Puzzle Ring is a type of puzzle or mechanical ring that consists of multiple interlocking bands. When assembled correctly, these bands create a single ring. However, when the rings are taken apart and mixed up, they can be challenging to reassemble, thus offering a fun puzzle for the wearer. Historically, puzzle rings have been made from precious metals and have been popular for centuries, often associated with certain cultural traditions.
A puzzle lock is a type of locking mechanism that requires the user to solve a puzzle or a series of puzzles in order to unlock it. These locks can vary widely in design and complexity, ranging from simple mechanical puzzles to intricate electronic systems. Puzzle locks can be physical objects, such as locks that require manipulating pieces in a specific way or solving a riddle to unlock. They may also include more complex devices that incorporate logic puzzles, patterns, or sequences that must be followed to open the lock.
A puzzle jug is a type of decorative drinking vessel that has an intricate design with one or more narrow openings or spouts that make it challenging to drink from without spilling. These jugs typically have a handle and are often made from materials like pottery, glass, or metal. The main feature of a puzzle jug is its unique construction, which requires the drinker to carefully navigate the openings to sip without spilling the contents. They can vary widely in design, sometimes with elaborate decorations or inscriptions.
Puzzle jewelry is a type of jewelry designed with intricate, interlocking pieces that can fit together to form a complete design. The concept often includes elements that can be separated or rearranged, creating a playful and interactive experience for the wearer. This style of jewelry can include items such as rings, bracelets, pendants, or necklaces that feature unique puzzles or designs requiring assembly or manipulation. Some puzzle jewelry can also symbolize relationships or connections, where two pieces represent two individuals coming together.
"Puzzle globe" typically refers to a three-dimensional globe composed of puzzle pieces that can be assembled to form a complete representation of the Earth or a specific thematic map. These globes serve both educational and recreational purposes: 1. **Educational Tool**: Puzzle globes can help individuals learn about geography, countries, continents, oceans, and topographical features by visually and physically engaging with the shapes and sizes of different land masses.
A puzzle box is a type of mechanical puzzle that often has sliding or interlocking pieces which must be manipulated in a specific way to open it. These boxes come in various designs and complexity levels and can be made from different materials, such as wood, plastic, or metal. Puzzle boxes typically contain a hidden compartment, and the challenge lies in figuring out the correct sequence of moves or actions needed to unlock the box and reveal its contents.
The Puck puzzle, often referred to as the "Puck" or "Puck Disks" puzzle, is a type of mechanical puzzle or brain teaser that consists of various disks or pucks that can be arranged or manipulated in specific ways. The goal usually involves fitting the pucks together in a defined space or achieving a particular configuration. In some variations, the puzzle may involve stacking, sorting, or arranging the disks according to color, shape, or size while adhering to specific rules.
Peg solitaire is a classic single-player board game that involves moving pegs around a board with the goal of removing all but one peg. The game is typically played on a cross-shaped board, although other variations exist. The board has holes where pegs can be placed, and the objective is to jump one peg over another, removing the jumped peg from the board.
The Nintendo Tumbler Puzzle is a toy puzzle that was released by Nintendo in 1985. It features a set of tiles that can be rotated and flipped to create different images or patterns. The puzzle is typically a cube or a box with various colorful designs, often incorporating Nintendo characters or themes. Players must manipulate the tiles or sections of the puzzle to align them in a particular order or to match a specific image.
"Minus Cube" refers to a geometric shape known as a "cubic minus," which is the geometric representation of a cube with certain characteristics. Specifically, a Minus Cube is often represented as a three-dimensional shape that appears to have its corners or edges 'cut away' or 'minused.' This can create a visually interesting object that still retains cubic properties but introduces a different aesthetic and functional aspect.
The Megaminx is a dodecahedral puzzle similar to the Rubik's Cube but with a more complex shape and structure. Each face of the Megaminx has a different color, and the objective is to rotate the faces of the puzzle to return it to a state where each face displays a single, solid color.
A mechanical puzzle is a type of puzzle that requires the manipulation of interlocking or moving parts to achieve a specific goal or solution. These puzzles often involve physical dexterity, spatial reasoning, and problem-solving skills. They can be made from various materials, including wood, metal, and plastic, and may come in various forms, such as: 1. **Disentanglement Puzzles**: These puzzles consist of intertwined pieces that need to be separated without breaking or altering the pieces.
The Magnetic Tower of Hanoi is a variant of the classic Tower of Hanoi puzzle, which has been a popular mathematical and recreational challenge since it was introduced by the French mathematician Édouard Lucas in 1883. In the standard Tower of Hanoi, the puzzle consists of three rods and a number of disks of different sizes that can slide onto any rod.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact