See if you can find the 8 differences in each set of images.
Libra
TiO2 particles deposited by the spray pyrolysis method combined with atmospheric pressure plasma jets and their application as a scattering layer for a dye-sensitized solar cell. Every TiO2 scattering particle represents a planet. The blue dots represent the asterism Libra and the yellow dots are stars.
Hao Ming Chang
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20160909011415-32599-mediumThumb-S0883769414000736_figu1g.jpg?pub-status=live)
February 2014 answer key
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20160909011415-53733-mediumThumb-S0883769414000736_figu2g.jpg?pub-status=live)
Nightfall over the cornfield
Scanning electron microscope image of molecular beam epitaxy-grown InAs/InGaAs nanowire heterostructures on Si(111) after postgrowth wet chemical etching in citric acid and subsequent acetone/isopropanol solvent bath.
Gregor Koblmüller, Technical University of Munich
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20160909011415-23843-mediumThumb-S0883769414000736_figu3g.jpg?pub-status=live)
The answers will be in the June 2014 issue.