April 29, 2019

This is my second day working with iPad Pro and the Apple Pencil. First the good news. This is a work tool that I will always carry with me. It will become a part of my daily routine. I can read a story, analyze my stocks, or study a book everywhere and at all times. I...

April 28, 2019

I am working with a new toy: an iPad Pro with an Apple pencil. This will serve as my daily journal. Before, I tried but failed, to write every day. For me this is essential. The process records my thoughts and the new things I learn. It is a mnemonic. Writing in longha...

April 11, 2018

There has been a delay in redesigning and updating my web pages. In part, this hiatus was prompted by my recent surgical intervention. My doctor’s inserted a stent in my anterior descending coronary artery in a portion of the vein known as the “widow maker.” Physically...

February 4, 2018

I just returned from my meeting with the members of the Microscopical Society of Southern California (MSSC). Many of the members are collectors, and viewing their collections is a treat. It is the closest, and I can come to for a field trip in time. Pictured in this po...

February 1, 2018

As seen in the previous blog, chromatic aberration obscures edges, and it can decrease resolution. Historically, many optical engineers devoted themselves to devise a means to remove this optical defect. The development of lenses to remove these color fringes was heral...

January 29, 2018

A reading glass is a low power magnifier that uses a

biconvex lens: this is a clear disc made of either plastic

or glass with a convex surface on both sides.

If you take a biconvex lens and place it close to an

object so that it lies within its front focal point, you


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Future Posts

I am working on posts about the cameras and microscopes I use. Also, I will describe some tips on getting the best exposure and what camera features you should be looking for. Producing these articles will take time; however, I will attempt to write a new one every two weeks.

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© 2018 by Brian Matsumoto