Tech
Did builders of Egypt’s first pyramid use a water-powered elevator?
A controversial study suggests that ancient people might have used one to hoist the stones used to assemble into King Djoser’s pyramid.
By Bruce Bower
Motion and Stability: Forces and Interactions
More Stories in Motion and Stability: Forces and Interactions
- Tech
Bioelectronics research wins top award at 2024 Regeneron ISEF
Three grand-award winners each took home at least $50,000. Hundreds more teens shared more than $9 million in prizes at the international competition.
- Environment
To limit pollution, new recipe makes plastic a treat for microbes
Microplastics made from fossil fuels take centuries to disappear. But the plant- and algae-based plastic can break down in weeks to months.
- Tech
Lego bricks inspired a new way to shape devices for studying liquids
Inspired by Lego building blocks, the approach could enable design of adaptable tools to study how fluids move through very small spaces.
- Physics
Experiment: Make your own cents-able battery
Make your own ‘voltaic pile’ with pennies and nickels, and find out how many coins will make the most electricity!
- Chemistry
Turning jeans blue with sunlight might help the environment
When dipped in indican and exposed to sunlight, yarn turns a deep blue. This process is more eco-friendly than the current denim dyeing method.
- Physics
Forests could help detect ‘ghost particles’ from space
If trees could act as natural antennas, one physicist proposes that they just might pick up signals of hard-to-spot ultra-high energy neutrinos.
- Physics
Physics explains what happens when a lawn sprinkler sucks in water
Experiments with a floating sprinkler revealed the surprisingly complex physics behind a simple question.
- Physics
How much fruit can you pull from a display before it topples?
About 10 percent of the fruit in a tilted market display can be removed before it will crash down, computer models show.
- Materials Science
Let’s learn about graphene
Scientists have been trying to understand and harness this material’s superpowers since its discovery in 2004.
