The Tripods: The City of Gold and Lead, by John Christopher

Book 19 for my 2025 goal of 30 books for the year! As is now default for me, my link to the book is through my bookshop dot org affiliate account.

Last month, I read the first book in John Christopher’s classic young adult science fiction series The Tripods, and was sufficiently intrigued and entertained to pick up the second book, The City of Gold and Lead (1967).

The first book in the trilogy, The White Mountains, leaves the origins of the tripods and their true nature mysterious, and the novel is more of a post-apocalyptic road trip story than a full science fiction tale. The second book steps fully into science fiction, as the protagonist goes on a mission into one of the mega-cities of the tripods in an attempt to find information that can eventually defeat them.

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An Echo of Children, by Ramsey Campbell

Book 18 for my 2025 goal of 30 books for the year! As is now default for me, my link to the book is through my bookshop dot org affiliate account.

Ramsey Campbell still knows how to catch me off guard. The first chapter of his latest novel An Echo of Children starts with grandparents visiting their children and grandson at their new house in the seaside town of Barnwall. Everything seems very mundane throughout, though there is a bit of tension in the house that eventually gets traced to the grandson Dean having an imaginary friend. That in itself is not terribly worrying, until Dean lets slip a completely unexpected and shocking comment about this imaginary friend.

This is what I’ve come to expect and love about the works of Ramsey Campbell, who I have written about many times on this blog. His stories tend to be a slow burn, with dread building up slowly and inexorably, leaving the reader with the uncomfortable awareness that something is very wrong but unsure of exactly what that is. Even the moments that catch me off guard, like the end of the first chapter of An Echo of Children, is in service towards establishing that dread and uncertainty.

The book comes out in September; Flame Tree Press was kind enough to provide me an ARC of the book to read and review in advance.

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The Tripods: The White Mountains, by John Christopher

Book 17 for my 2025 goal of 30 books for the year! As is now default for me, my link to the book is through my bookshop dot org affiliate account.

Before there was The Hunger Games, or Divergent, there was John Christopher’s The Tripods, a series of young adult novels about teenagers struggling against a powerful oppressive force in a science fiction dystopia. In one of my random searches on the internet, I came across a reference to the series, and was immediately intrigued enough to go read the first book for myself. That book is The White Mountains (1967), which is still in print today.

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Crypt of the Moon Spider, by Nathan Ballingrud

Book 16 for my 2025 goal of 30 books for the year! 

The year is 1923. Veronica Brinkley is landing on the moon to get psychiatric treatment at the Barrowfield Home for the Treatment of the Melancholy.

You didn’t read that wrong: she’s landing on the actual moon for psychiatric care in 1923. This is the beginning of the surreal Gothic fantasy Crypt of the Moon Spider, by Nathan Ballingrud, released last year.

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An introduction to quantum cryptography

I’ve been brushing up on my quantum physics and quantum information science lately, and thought it would be good practice for me to give a little introduction to the idea of quantum cryptography, and one of the first strategies proposed to do it. “Cryptography,” of course, refers to sending coded messages between two people, and the “quantum” part refers to using the inherent properties of quantum physics to make messages harder to crack. This post, then, will be a little bit about the concepts of cryptography and a little bit about the concepts of quantum physics.

We’ll talk about the first protocol for such quantum cryptography first introduced by Bennett and Brassard in 1984, referred to as the BB84 protocol1. My discussion follows my recent read of Stephen Barnett’s book on Quantum Information, which is a very good introduction for physics folks with some background in math and quantum mechanics. The description here, however, will be my own understanding and interpretation, subject to my own still growing understanding of the subject.

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Rise of the Zombie Bugs, by Mindy Weisberger

Book 15 for my 2025 goal of 30 books for the year! Had a significant hiatus of reading due to life stresses, but still ahead on my goal.

Zombies are everywhere in fiction these days, from The Last of Us to 28 Years Later to The Walking Dead and more. There was a time, back in the Night of the Living Dead days, when zombie stories were somewhat of a niche subject and everyone probably thought that they’d go out of fashion and be forgotten. On the contrary, zombie stories alone have become a mainstay of horror, their own enduring subgenre.

This is why Mindy Weisberger’s recent book, Rise of the Zombie Bugs, is incredibly timely and fun. Though zombification of humans like in the movies appears (for the moment) to not be a thing, it turns out that zombification is a surprisingly common thing among the “bugs.”

Small disclaimer: I’m a longtime friend of Mindy’s, and am acknowledged in the book for providing “bookish wisdom” (though I’m not sure that I was particularly helpful). Also, because we’re friends, it will be weird for me to call her Weisberger through this post, so I’ll stick to Mindy.

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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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Posted in Animals, Personal | 7 Comments

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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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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