ScienceDaily: Top Science News |
- Multi-purpose photonic chip paves the way to programmable quantum processors
- World's smallest steam engine: Heat engine measuring only a few micrometers works as well as its larger counterpart, although it sputters
- More shrubbery in a warming world
- Savanna chimps exhibit human-like sharing behavior, anthropologists say
| Multi-purpose photonic chip paves the way to programmable quantum processors Posted: 11 Dec 2011 10:40 AM PST A multi-purpose optical chip which generates, manipulates and measures entanglement and mixture -- two quantum phenomena which are essential driving forces for tomorrow's quantum computers -- has now been developed. This work represents an important step forward in the race to develop a quantum computer. |
| Posted: 11 Dec 2011 10:40 AM PST What would be a case for the repair shop for a car engine is completely normal for a micro engine. If it sputters, this is caused by the thermal motions of the smallest particles, which interfere with its running. Researchers have now observed this with a heat engine on the micrometer scale. They have also determined that the machine does actually perform work, all things considered. Although this cannot be used as yet, the experiment shows that an engine does basically work, even if it is on the microscale. This means that there is nothing, in principle, to prevent the construction of highly efficient, small heat engines. |
| More shrubbery in a warming world Posted: 08 Dec 2011 12:20 PM PST Scientists have used satellite data to confirm that more than 20 years of warming temperatures in northern Quebec, Canada, have resulted in an increase in the amount and extent of shrubs and grasses. |
| Savanna chimps exhibit human-like sharing behavior, anthropologists say Posted: 01 Dec 2011 06:48 AM PST Anthropologists report that chimpanzees in Senegal frequently share food and hunting tools with other chimps. This is thought to be the first study to document non-meat sharing behavior among chimpanzees. |
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