Access
To read this story in full you will need to login or make a payment (see right).
News and Views
Nature 418, 377-379 (25 July 2002) | doi:10.1038/418377a
Open Innovation Challenges
-
Methods of Modeling Adaptation in Populations
The analysis of adaptation with a population is a frequently encountered computational modeling scen...
-
Novel Approaches to Protecting Maize from Insect Damage
The Seeker is looking for novel approaches to protecting maize from insect damage. This Challenge re...
- More Challenges
- Powered by:
nature jobs
Group Leader Positions
- IMP
- Vienna Austria
Postdoctoral Associate in Enzyme Biochemistry
- Cornell University
- Ithaca, NY
Quantum physics: Spaced-out electrons
John C. H. Spence
Abstract
In a stream of photons, the particles tend to bunch together, but electrons in a beam do the opposite. At last, this quantum effect for free electrons — the Hanbury Brown–Twiss anticorrelation — has been seen experimentally.
Like the gentle patter of raindrops, we expect photons, the quanta of sunlight, to arrive at Earth at random intervals, their arrival times distributed in just the same, natural way that customers arrive at a box office to buy tickets for a play. A histogram of the number of people or photons arriving per unit time follows what is known as the Poisson distribution.
To read this story in full you will need to login or make a payment (see right).
