I take it your asking the Brand?
Every one has their likes and dislikes so look online at the reviews for the ones in your price range. Be aware I believe with the latest MacBook Air's you have to buy Apples external optical drives in order for the external drive to be bootable. I don't think any 3rd party optical drives are bootable for the Air.
Because it lasts longer
Optical Energy, better known as Optical Power, is the converging strength of a lens. As an example a lens with a high Optical Power will have a wider range of view but less focal distance. A lens with low Optical Power will have a longer focal distance but less range of view.
yes
"E'er" is the short version of "Ever".
"Photo" is a shortened version of "photograph," which is the longer word referring to an image taken with a camera.
plastic optical fibers
muscles become longer, but thinner
Ready-to-assemble (RTA) furniture was extremely popular in the 1990s, partly due to an improvement in quality--the products no longer smacked of dormitory living.
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Zoological garden
Google has stated that it has become too difficult to maintain parity on the Linux version. It will still work but Google will no longer be offering updates for it.
In Japan, in didn't take very long. The Pokemon fever was in full swing soon after Green and Red were released there. Here, I'm not sure. But, I think it took a bit longer to become popular. But, not a lot of people know exactly how long.