RIP Cookie, 2010-2025

I haven’t posted in a while because I have had a lot of stuff going on in my life. That culminated today in having to put my kitty Cookie to rest after her seizure episodes returned with intensity and would not respond to any treatment. I have always viewed being a cat parent as a duty from the beginning of their life to the very end, and I was there holding Cookie as she went to her final rest.

Cookie in 2017, next to a megalodon tooth for comparison.

I was there for Cookie’s entire life. She came to me as a kitten only two weeks old, one of the fosters that Beth and I were taking care of. Her eyes weren’t even open yet when we took her in.

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Invisibility demos at UNC Charlotte STEAM Innovation Expo!

This past Sunday, I participated once again in the annual UNC Charlotte STEAM Innovation Expo, in which faculty, staff and partners present science, technology, engineering, arts and mathematics demonstrations and as well as demos highlighting the links between them. Last year, I planned a detailed table of interesting invisibility demonstrations, but I was unable to make it due to life stuff (which happens a LOT these days). However, this year I was able to get my demonstrations together and do the Expo and thought I would share the demos that I did, in the order I did them, with explanations!

Selfie of me in front of my invisibility sign for my table.
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Twice as Dead, by Harry Turtledove

Book 14 for my 2025 goal of 30 books for the year!

Hard-boiled detective stories often start in a similar manner: a gritty private investigator has a gorgeous dame walk through his office door with a case — but that woman is a femme fatale who has a hidden agenda that will likely spell trouble for the PI. In the case of Harry Turtledove’s latest novel, Twice as Dead, the woman in question is much more fatale than in a normal story: she is a vampire.

The private investigator is Jack Mitchell, a chain smoking, hard drinking private detective in a post-WWII Los Angeles that is very different from the historical one. Vampires live openly in the city in their own Vampire Town, coming out only at night. Ghosts exist, and some even work for the police department. Zombies are big business, being rented out as tireless laborers for menial tasks. And magic is real, and spellcasters can summon demons — or worse — into our reality.

The vampire is Dora Urban, and she hires Mitchell to find her half brother Rudolf Sebestyn, who has gone missing without warning. Against his own misgivings, and the warnings of the talking cat Old Man Mose who deigns to live with him, Jack takes the case, and finds himself increasingly smitten with the beautiful, mysterious and powerful Dora. He has plenty of bills to pay and is way behind on paying them, so he ends up taking two other cases at the same time: an investigation into a man’s cheating wife and another missing persons case where a factory worker didn’t return home from work one night. As Jack digs deeper into each of these cases, he finds that there is more going on than he imagined, and strange connections arise between his investigations. Complicating things, crooked members of the LAPD show a keen interest in Mitchell’s activities, and aren’t above sending rodent spies to keep track of him. By the end of the story, all of the cases will cross paths, and Los Angeles might be forever changed by their revelations.

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Posted in Mystery/thriller, Weird fiction | Tagged , , , , | 4 Comments

Nicol invents a polarizing prism (1828)

I’ve talked a lot about polarization recently, including the story of how the best polarizing material was discovered on accident and how modern polarizers made from that material really changed science and technology in a major way. Along the way, I stumbled across the scientific paper that introduced the earliest polarizing device — the Nicol prism. Invented by the Scottish geologist and physicist William Nicol in 1828, it became the standard method of developing polarized light for many years. It is a fascinating device that uses two distinct and unusual optical phenomena together in a clever way, and thought it would be worth discussing his paper and his fascinating invention.

To begin, as I did in the aforementioned posts, let me first say a few things about polarization. Light is a transverse electromagnetic wave, which means it consists of an electric field and a magnetic field, both oscillating perpendicular to the direction the wave is travelling, as illustrated roughly below.

We usually use “E” to represent the electric field and “H” to represent the magnetic field (don’t ask me why we use “H” — I don’t know). As a transverse wave, there are always two distinct ways that a light wave can oscillate. For convenience, we’ll call them “up-down” and “left-right.” We can also describe them by any pair of directions perpendicular to travel, however, such as “upper right-lower left” and “upper left-lower right.”

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My “Why I Love Horror” story!

The other day, I happened to see that my social media friend and super talented horror author Brian Keene is a contributor to a book of essays called Why I Love Horror, coming in September of this year. The book is described as “A love letter to the horror genre from many of the most influential and bestselling authors in the industry.” This got me thinking that it would be fun to share my own tale of why I love horror! I’ve actually shared this story in brief ages ago, at the very start of my blog, so I thought it would be fun to return to it with a little more detail.

In pre-teen years, I was the most sensitive child you can imagine. I had extremely sensitive hearing and would even jump at the popping of a balloon. When it came to scares, I was afraid of anything that risked being remotely scary. One example is that I refused to go into Disney World’s Haunted Mansion when we visited the park when I was a kid; another example that always sticks in my head is that I found movies such as the 1963 The Day of the Triffids too scary to watch. (It is a pretty decent movie, but not one that I would call particularly scary these days.) Basically, anything intense in any way, shape or form was too much for me, in general, and horror was completely out. I avoided roller coasters until my later teens for pretty much the same reason.

Then there was one day — I was about 14 years old, and I know this for reasons I will mention shortly — that I decided to watch an episode of Tales from the Darkside. For those unfamiliar, it was a horror anthology show that ran from a pilot in 1983 to a final season in 1988, culminating in a 1990 movie, Tales from the Darkside: The Movie. The intro to Tales from the Darkside is still a bit creepy to me today, even with its rather primitive special effects.

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Posted in Horror, Personal | Tagged , , , , | 2 Comments

Donate to support kitty Mitzi’s cancer surgery!

Hi all, my kitty Mitzi goes into surgery tomorrow to remove a cancerous growth on her nose. My impression from the surgeon and oncologist is that the outlook looks good for her, with no spread of the cancer elsewhere yet.

I hate to set up another GoFundMe so close to the last one I had to do for my kitty Zoe, but I thought I would invite people to help out with the cost if they’re so inclined. The surgery will be between $2000 and $3000, which won’t break me, but it is a big hit on my remaining savings. If my blog writing and/or social media posts have entertained you and you feel like helping, here is the GoFundMe link.

Mitzi back in 2019, in a candid pose. She’s now about 11 years old.
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Now a Bookshop.org affiliate!

Hi all, this is just a short message to note that I decided to become a Bookshop.org affiliate! For those not familiar, Bookshop.org is a relatively new (2020) online bookshop whose mission is “”to financially support local, independent bookstores” as a rival to Amazon’s dominance. I recently learned that they have an affiliate program, so that affiliates can earn a small commission if books are purchased through their links, so I opted to join the program! I’m always reviewing books on here anyway, so I might as well see if I can support a good mission at Bookshop and get a little boost for myself, as well.

If you’ve been following my blog for any amount of time, you’ll notice that I largely only review books that I find worthwhile and whose authors I want to support anyway (with the exception of weird historical books whose authors are long gone, which I talk about for the historical aspects). I don’t intend for any of this to change as an affiliate (pretty sure the money I’ll get isn’t worth selling my soul for), but I’ll share an affiliate link for any books I think are worth reading in my posts.

Anyway, just wanted to make sure I was upfront and up to date with my blog audience! The affiliate link for my “online bookshop” is here; as time goes on I’ll populate it with books that I’ve reviewed. I may go back and add links to some of my more recent reviews, as well.

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Old School Dungeons & Dragons: Part 33

Well, it’s been a hot minute since I did one of these compilations, hasn’t it? Turns out I’ve done a few threads on social media about #OldSchoolDungeonsAndDragons and didn’t realize I had enough for a new blog post. So, here’s part 33 of this long-running series!

Pages from the Mages (1995), by Greenwood and Beach. This is a curious and very specialized D&D supplement! It originated from a series of articles that Ed Greenwood, creator of the Forgotten Realms, wrote about the origins and contents of various spellbooks in Dragon Magazine from the early 80s to the early 90s.

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Posted in Entertainment, role-playing games | Tagged , , , , | 1 Comment

Physical copies of Electromagnetic Optics are now available!

This post is primarily aimed at optics students and researchers, so feel free to ignore otherwise!

I wanted to let folks know that my textbook on Electromagnetic Optics is now available in physical copies through sites like Bookshop.org! Here are the first copies I recieved:

The book is also of course available in e-book format directly from IoP Publishing; the description as given there:

This book will be an in-depth textbook introducing and covering all topics related to the fact that light is a transverse electromagnetic wave. It will begin with a discussion of the history of Maxwell’s equations, from which the wave properties of light were first deduced, and then move into the fundamentals of electromagnetic waves, such as the polarization of light, energy and momentum conservation, and basic solutions of Maxwell’s equations. From there, it will move into more practical topics: light propagation in matter of various types, light propagation through interfaces, light propagation in waveguides (like fibre optic cables), and light scattering.

Anyway, I’m excited because I think this is my best book yet! It’s designed for upper level undergraduate/intro graduate level optics students.

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Polaroid: the game-changing optical technology (1938)!

Some technology is so pervasive and mundane in modern society that it is hard to comprehend what a seismic shift its introduction caused in civilization. Examples I can think of are refrigerators and air conditioning, but in science an example that I hadn’t really appreciated until recently is the humble polarizer — in particular, the inexpensive sheet polarizers that form the basis for almost every practical polarizer used today.

Not long ago I wrote a blog post about the curious history of the crystal herapathite, one of the first truly effective polarizing materials. It was discovered in 1852 by accident, but didn’t really become a practical polarizing material for some 75 years, mainly due to the extreme difficulty in growing crystals large enough to be used for optical devices. In 1929, however, Edwin Land took a very different strategy: he used a magnetic field to align a solution of microscopic herapathite crystals, and then dipped a sheet of plastic into the solution to capture the crystals. The result was a thin material that produced nearly perfect polarization over the entire visible spectrum of light, and one that could be produced in large quantities inexpensively. This material, dubbed Polaroid, become the basis of the Polaroid company that later created the Polaroid instant camera (no relation to polarizers).

How big a deal was the creation of Polaroid? Well, in 1938 an article appeared in the Journal of Applied Physics titled, “Polarized light enters the world of everyday life.” The purpose of the article was the lay out all the new technologies, and possible technologies, that could now be implemented thanks to Polaroid and similar polarizers. In this blog post, I thought I would give an overview of this paper and the applications it covered, to show how inexpensive mundane polarizers really did change the world!

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Posted in History of science, Optics | Tagged , , , , | 2 Comments