Category Archives: Science

Sideband #43: Chaos!

Sideband ElectrodeIt seems fitting to take this opportunity to write a Sideband post the way I had originally intended when I began them. That intent goes back to the beginning; the first Sideband post was my second post here. For better or worse, the original intent didn’t last long.

In fact, it’s hard to see much difference between the Sideband posts and the other posts. That probably reflects a lack of focus on the main topics. Sidebands were intended for stuff that was off topic. But I’ve been so all over the map on topic that at least one blogger asked if I had a short attention span. [insert here one of the short attention span jokes you’ve heard before]

That’s not going to change. I’m eclectic; so is my blog. Sidebands will evolve. For now, here’s a Sideband on yesterday’s post, just like Blogger originally intended.

Continue reading


Chillaxmas Tertius

Dug-SquirrelI had thought, on this third day of Chillaxmas, that to entertain and terrify you, I would post a true tale of alien invasion and species murder. I know you’re expecting the punchline to be that I would if I could, but I don’t have such a tale, so I can’t, ha, ha. Well, I do have just such a tale, and I could, I’m just not.

Not today, anyway. It’s all queued up for tomorrow, and it’s just as well. This will give me a chance to issue a little advance warning. I have pictures of the aliens! War is never for the faint of heart; it’s all the worse with an exoskeleton-wearing alien enemy!

Today, very much like Dug, I was distracted by some virtual philosophical squirrels.

Continue reading


Infinity is Funny

You probably have some idea of what infinity means. Something that is infinite goes on forever. But it might surprise you to know that there are different kinds of infinity, and some are bigger than others!

As an example, a circle has an infinite number of points. (Yet the circumference of the circle has finite length.) Compare that to a straight line with infinite length. Both have infinitely many points but does the finite length circle have fewer? [The answer is no.]

To understand all this, we have to first talk a bit about numbers.

Continue reading


Doesn’t Look Like a Duck!

Saw something worth sharing on the most excellent Bad Astronomy blog today. It’s a series of images by reddit user, jerfoo. Click the picture below to open a window on the whole thing (it’s very tall and skinny, so restore it to 100% magnification and scroll down as you read the “story’).

Continue reading


Sideband #42: Half Time

Tonight’s sky holds a half-moon that looks somewhat like the picture on the right. Can you tell me, just by the picture, is the moon getting bigger or getting smaller?

Of course, the moon isn’t really changing size. We use the shorthand “bigger” and “smaller” to refer to how much of the moon we see. Or more properly, how much of the moon is illuminated by the sun. Or even more properly, how much of the moon’s surface facing the Earth is illuminated by the sun.

You can see why we often just say it’s getting “bigger” or “smaller!”  Or we can use the terms waxing (getting bigger) and waning (getting smaller).

So, can you tell, from the picture, is the moon tonight waxing or waning?

Continue reading


Wednesday Wow!

Welcome to Wednesday Wow, an irregular series appearing from time to time when I want to write about something that made me say, “Wow!” Or which made me say, “Weird!” Or, “Wonderful!” Or possibly even, “Wild!!”

There may also be posts about Widgets, Whirligigs, Wiccans, Waffles, Wallpaper, Whimsy, Wisdom, Wit, Weather, Wind, Winter, Wushu, Wackos, Whatnots, Wherefores or Whatever.

But not about Women, Wenches or Wahines; they’re too special to be limited to a day, even though they often make me say, “Wow! Wonderful!”

Nor will it be about Work, War or Woodlands. Also, no Whining, Whipping, Whispers, Whistling, Windows, Wine or Whiskey. And I’ll try to not be Wanton, Wonky, Whistful or Worrisome. I can’t guarantee I won’t wander into being a Wry Wiseass. And I hope my Words won’t be Wrong, Wasted or a Wreck.

Continue reading


Final Thoughts

Two long posts to represent the fallen Towers, WTC1 & WTC2. One shorter post to represent WTC7. Many of the surrounding buildings were damaged by the collapse of the Two Towers. The 22-story WTC3, which was adjacent to both was destroyed. Three nearby nine-story buildings, WTC4, WTC5 and WTC6 were all badly damaged.

Some find it odd that WTC7, which was the furthest, was seemingly not seriously damaged, but then fell on its own nearly seven hours later. As I wrote in the first post today, many of the conspiracy crazies focus on WTC7 as the actual primary target.

As if that made any sense at all. Destroying 316 stories worth of buildings (not to mention nearly 3000 Americans) to take out one office containing supposedly damaging documents? Seems like merely starting a weekend fire in an office a floor or two below would do the trick, if you wanted to not draw attention to the real target. It’s hard to imagine anyone coming up with such a plan. The phrase “utterly idiotic” comes to mind.

In this last post, I want to touch on some details.

Continue reading


Beams of Steel

So what did happen on 9/11? How did two airplane crashes bring down two 110-story skyscrapers? How did the collapse of WTC2 and WTC1 also cause the collapse of WTC7? What exactly happened?

If the answers to those questions interest you, keep reading.

In the sibling post I wrote about the conspiracy crazies who believe the Towers and WTC7 were brought down deliberately by our government using explosives.

A somewhat less utterly preposterous theory suggests it was American and/or Israeli agents the flew the planes. In some versions the passengers were off-loaded and vanished somehow, in others they were captives. (Which ignores the air-to-ground phone calls made by some of those passengers. Melissa Etheridge has a heart-breaking song about one such case.)

But here’s what the NIST scientific analysis of the events found.

Continue reading


Conspiracy Theories

Eleven years ago today a world-changing event occurred. A year ago, on the ten-year dark anniversary, I wrote a post about how we’d changed, about how profoundly our view of the world changed.

Today, at the eleven-year mark I want to write about something else. I want to write about how some people believe it was more than what it was. I want to write about how some people believe we did this to ourselves. About how some believe that our own government was behind the sudden, terrifying, mass murder of nearly 3000 Americans.

I want to write about conspiracy crazies. And make no mistake, that is exactly what they are: crazy.

Continue reading


ST: Transporters & Replicators

Okay, any Star Trek fan knows that Gene Roddenberry invented the transporters so he wouldn’t have to deal with the special effects necessary to show a landing every time the crew visited a planet. It also cut out any time needed to show the launch, travel time or landing, and that moves the story along. Both of those are smart and good, so let me start by saying, “Gene, that was awesome! And so is the horse you rode in on!”

There’s also the simple fact that, in science fiction, you have to grant a few “gimmes” in order to tell the story you want.

The canonical example here is warp drive. Do you want to explore strange new worlds, and seek out new life and new civilizations? Well, you’re gonna have to find a way around Mr. Einstein, who laid down the Universal Speed Limit, a little thing we like to call c.

Continue reading