2016年1月18日星期一

the moon could also be a lower cost agricultural production spot for interplanetary space travelers in the distant future

However, if the lunar base were on the rim of the Shackleton Crater near the moon’s South Pole, Wheeler says, there might be sunlight available for as long as 24 days at the time. But as he acknowledges, such ideas will require a very long-term outlook.”

“To set up the [lunar agricultural] infrastructure, initial capital investments would be very high,” said Wheeler. “But conceivably, because of the reduced launch costs (under lower gravity), the moon could also be a lower cost agricultural production spot for interplanetary space travelers in the distant future.”

According to Andrew Smith, product marketing manager at Power Integrations, "The lighting industry typically asks for 80% efficiency for drivers targeting 60W A19 bulb replacements. To achieve viable LED-based replacements for 75W and 100W bulbs, much higher efficiency is needed in order to reduce the heat dissipated by the driver. The 88% efficiency of DER-323 makes the thermal design of the bulb straightforward and inexpensive."

The circuit will fit on a single-sided board and 25 components. No potting is necessary and the transformer is replaced by a low-cost inductor.

Samsung's president further revealed that he sees transparent displays as the next emerging technology following OLED. Samsung thinks that ultra-definition is not going to be so important in the near future due to the lack of content.

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