Mathematical formula for the perfect Christmas tree

by Laura Domela

For those who prefer something more traditional than the Treeasy, members of the University of Sheffield’s Maths society have devised a formula for the perfect Christmas tree in response to a challenge by U.K. department store Debenhams.

The formula, which was created by students Nicole Wrightman and Alex Craig, uses the height of a tree to calculate the ideal number of baubles, length of tinsel, length of lights and even the height of the star, fairy or angel sitting atop the tree required to give the tree that catalog-perfect look.
via gizmag

More here at the University of Sheffield website

Libby's Lab

Libby's Lab Scopes out Phoenix Contact Trio 3 Power Supplies

Sponsored by Mouser Electronics and Phoenix Contact

Join Libby and Demo in this episode of “Libby’s Lab” as they explore the Phoenix Contact Trio 3 Power Supplies, available at Mouser.com! These DIN-rail power supplies are great for providing solid, stable power in a variety of applications. Keep your circuits charged and your ideas sparking!

Click here for more information about Phoenix Contact TRIO 3 One-/Three-Phase & Coated Power Supplies

featured chalk talk

Advanced Solenoid and Valve Control

Sponsored by Mouser Electronics and Analog Devices

In this episode of Chalk Talk, Lars Jaskulski from Analog Devices and Amelia Dalton explore the what, where, and how of solenoid actuators. They also investigate the challenges associated with solenoids and solenoid valve control and how Analog Devices’ Quad Smart Serial-Controlled Solenoid and Motor Driver can help detect solenoid plunger movements, improve energy efficiency, lower heat generation and more.

Click here for more information about Analog Devices / Maxim Integrated MAX22216 Solenoid & Motor Drivers

Aug 18, 2025

1,683 views

Mathematical formula for the perfect Christmas tree

Related