Daphne Zbaeren-Colbourn Bern, Switzerland Subject Matter: Strand of grass (Spinifex littoreus) (400x)Technique: Brightfield

The Doppler effect is observed whenever the source of waves is moving with respect to an observer. The Doppler effect can be described as the effect produced by a moving source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching and an apparent downward shift in frequency for observers from whom the source is receding. It is important to note that the effect does not result because of an actual change in the frequency of the […]

Artificial intelligence expert Mark Bishop says a ban on weapons that can deploy and destroy without human intervention is vital    

In their book Science Left Behind: Feel-Good Fallacies and the Rise of the Anti-Scientific Left, Alex Berezow and Hank Campbell counter allegations of a Republican war on science by pointing out how political progressives are equally anti-science. According to Berezow and Campbell, progressives hold opinions that are not based on physical reality, and claim that their [...]

It's nearly summertime in the northern half of the world – time to find out what the festivals are laying on to entice the rational reveller