#fourdimensional

A deep-tissue spatial transcriptomics method simultaneously captures hundreds of hair follicles spanning organogenesis in mouse skin. Ordering follicles by molecular age transforms this snapshot into a map of organogenesis in both space and time, revealing the choreography of organ assembly and how it goes awry in genetically hairless mice. Read more about this post… Credits: Source Disclaimer

Meet The Four-Dimensional Numbers That Led to Modern Algebra

Imagine winding the hour hand of a clock back from 3 o’clock to noon. Mathematicians have long known how to describe this rotation as a simple multiplication: A number representing the initial position of the hour hand on the plane is multiplied by another constant number. But is a similar trick possible for describing rotations through space? Common sense says yes, but William Hamilton, one of…

Meet The Four-Dimensional Numbers That Led to Modern Algebra

Strange, long-forgotten numbers called quaternions are undergoing a revival in computer graphics, math, and physics. Science Latest