Articles sur Physics

Affichage de 181 à 200 de 214 articles

Iran is constructing nuclear power stations; that much is clear. AAP

Could Iran be building nuclear weapons? A scientific perspective

There is much concern that Iran is in the process of developing nuclear weapons. Such a development, we’re told, could induce Israel to launch a unilateral military strike with all types of unpredictable…

Does antimatter weigh more than matter?

Researchers have developed, for the first time, a method to efficiently produce long-lived “positronium” – a bound state…
Watch your maths: an Australian Academy of Science report looks to be based around mistaken use or interpretation of numbers. Flickr/emdot.

Science not plummeting in schools: report is ‘way out’

The Federal Department of Education says it advised the Australian Academy of Science’s authors of a break in the series…

Light likes passing through blocked holes

Placing a metal cap over a small hole in a metal film does not stop light passing through, but rather enhances its transmission…
Photosynthesis converts low-energy photons into usable energy; it may teach us how to do the same. papalars

New chlorophyll could hold the key to more efficient solar panels

As the great spectre of climate change continues to loom large over the future, the search for viable, renewable energy sources is becoming ever more important. Solar power has long been seen as a vital…

Lithium the key to quicker fusion

Experimental fusion can be made more efficient by coating reactor walls with lithium, scientist have found. The lithium coating…
If the signs are right, fundamental equations of cosmology may need altering. waljoris

Is life on Earth due to a quirk in the laws of physics?

A radical discovery by my colleagues and I – reported this week in Physical Review Letters – could help explain why it was possible for life (at least as we know it) to develop on Earth, but not in other…
The GPS on your phone couldn’t work without General Relativity. Jym Dyer

Explainer: Einstein’s Theory of General Relativity

It’s the year 2100. You wake up alone in a small, windowless room. The only other thing in the room is a small ball. Maybe the room is located in your city, but maybe it’s inside that new spaceship everyone’s…
We know they’re out there, and now we’re closer than ever to finding gravity waves. NASA

Gravity waves, scientists wave back: squeezing light beyond quantum limit

Detecting gravity waves is a major goal for astrophysicists. We know they should be there, but we haven’t found them yet. But today we are one step closer. By literally squeezing light on a quantum level…
A universe composed differently could still support complex life. Susan NYC

Peer Review: The Fallacy of Fine-Tuning

Welcome to Peer Review, a series in which we ask leading academics to review books written by people working in the same field. Here Geraint Lewis, Professor of Astrophysics at the University of Sydney…
Graphene may have humble beginnings, but it’s becoming a major draw. qwertyuiop

From pencil to high-speed internet: graphene is a modern wonder

It inspired the 2010 Nobel Prize in Physics. It’s the best thermal conductor we know of. It’s a crystal stiffer than diamond, but able to stretch by 20% of its length, and can carry a current density one…

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