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Customer Reviews: 2
Top Reviewer Ranking: 23,828,119
Helpful Votes: 29




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Celestron 44104 500x Power Advanced Biological Microscope
Celestron 44104 500x Power Advanced Biological Microscope
Price: $103.55
27 used & new from $96.00

20 of 20 people found the following review helpful
5.0 out of 5 stars Excellent for the money..., August 11, 2009
First of all, let me reassure all of you that are wary of this microscope because of the reviews stating the light gets hot - they seem to have fixed this issue! I'm not sure what they were like before but this version uses a separate power supply that supplies a low DC voltage to the illuminator. Mine has been on for an hour and all parts are cool to the touch.

The rest of this microscope is as others have described: the eyepiece tube does have a few perma-specs that need to be cleaned out and eye relief leaves something to be desired. I was able to obtain a solid 100% field of view but you can expect your eyelashes to be touching the eyepiece on a regular basis. I don't see any reason you couldn't upgrade to better eyepieces if this is a concern to you.

All in all, even after reading the other reviews, I have to say I was still pleasantly surprised at the quality and solid feel of this microscope. All the knobs and dials provide nice feedback and proper resistance to hold adjusted positions. The stage is nice and large and has nicely marked millimeter scales. The base is sturdy and the arm reclines with just the right amount of tension to where it's not too difficult to maneuver yet holds in place nicely. Lens quality seems quite good for this price range. As with any optics, at higher resolutions the specimen gets slightly darker but even with the 40x objective, the entire field of view is nice and clear from edge to edge.

I would highly recommend this microscope to anyone looking for a high quality and reasonably priced student or hobby level microscope. The included slides are a nice bonus to give you something to look at when it arrives.


Beginning PHP 5 and MySQL: From Novice to Professional
Beginning PHP 5 and MySQL: From Novice to Professional
by W Jason Gilmore
Edition: Paperback
50 used & new from $0.98

9 of 16 people found the following review helpful
3.0 out of 5 stars Word 'Beginning' in the title is misleading, August 21, 2004
If you are looking for a comprehensive text on PHP and do NOT have a programming background, you may want to start somewhere other than this volume. It is definitely NOT geared toward the rank amateur. I got this book to learn PHP and more specifically to help me integrate forms better into my Web pages. Sadly, 'Chapter 11: Forms and Navigational Clues' has only about ten pages of PHP as it relates to forms and half of that is semi-useful scripting examples. I'm sure this book is a fantastic reference if you are already familiar with programming but if you are a PHP novice, like I am, this book is not where you want to start.


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