Question about Science & Laboratory
If you have a rotating perforated diaphragm, that means the hole you want to use is blocking the light partially. Make sure your diaphragm is set correctly.
Also, you might want to check that your objective is set and aligned, that could also cause half the field being dark.
Posted on Jan 30, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 27, 2014 | Zeiss Humphrey 740 Visual Field Analyzer
Nov 01, 2011 | Watches
Jan 19, 2011 | Holmes Products HCH4953-U Ceramic Compact...
Dec 06, 2010 | 1989 Jeep Wrangler
Mar 15, 2009 | 1997 Ford Windstar
May 16, 2008 | Gsci GS7 Goggles
Dec 30, 2007 | Tasco 750 Monocular Microscope
Sep 08, 2005 | Sony Cyber-Shot DSC-P72 Digital Camera
Apr 04, 2017 | OMC Johnson Evenrude 9 1/4" X 9" Stainless...
213 people viewed this question
Usually answered in minutes!