Browsing Tag
energy
5 posts
The Power Grid
The power grid operates on alternating current (AC), where voltage and current oscillate in cycles. Reactive loads, such…
Hydropower damages river systems in Africa: how more solar and wind power can solve this problem
Angelo Carlino, Carnegie Science; Andrea Castelletti, Polytechnic University of Milan, and Rafael Schmitt, Stanford University Across the African…
Cryptocurrencies use massive amounts of power – but eco-friendly alternatives come with their own risks
Mark Garlick/Getty Images Dulani Jayasuriya, University of Auckland, Waipapa Taumata Rau As the urgency of climate change ramps…
Dyson spheres: astronomers report potential candidates for alien megastructures – here’s what to make of it
Simon Goodwin, University of Sheffield There are three ways to look for evidence of alien technological civilisations. One…
Why batteries come in so many sizes and shapes
Maybe you have a drawer in your house that looks like this? Peter Fiskerstrand/Wikimedia, CC BY-SA Wesley Chang,…