The picture on the left shows an array of micromagnets, while the picture on the right shows light diffracting off of a wafer of the particles. The two magnetic disks (shown at left) are kept a fixed distance apart by non-magnetic spacers. By adjusting the spacing between the disks, researchers can tune the signal coming from the magnetic particles to corresponding colors on an MRI.
Credit: Zabow, Nature
Even if science can’t make life longer, perhaps a pill can make a long life better
The gene patenting decision from a plaintiff’s point of view
With everyday materials, two research teams conceal ordinary objects
In mating display, male birds match moves to songs
Coverage of the 2013 American Association for the Advancement of Science meeting
The Year in Science 2012
Three-part series on the scientific struggle to explain the conscious self
Tables of contents, columns and FAQs on SN Prime for iPad
By Leila Schneps and Coralie Colmez
Review by Janet Raloff
Please alert Science News to any inappropriate posts by clicking the REPORT SPAM link within the post. Comments will be reviewed before posting.
You must register with Science News to add a comment. To log-in click here. To register as a new user, follow this link.