Month: January 2012

Wednesday, 11 January 2012

08:12 – The guy from Piedmont Natural Gas showed up yesterday to look at the gas logs. He blew out the thermocouple/oxygen sensor mechanism, as I’d done, but apparently more successfully. The pilot light has been burning since he left, but we haven’t had the gas logs lit yet, other than the several minutes that we let them burn while he was here watching them. The pilot flame now looks normal, a pure blue gas flame rather than blue tinged with yellow.

I’m almost finished with Lab IV-3: Investigating Cell Division. That will go off to the editors today, and I’ll jump back into the final session, Lab XI-4: Investigating Vertebrate Structures. I’ll finish that this week, and that’ll be it for new material, other than the Preface and Introduction. I’ll get those knocked out next, and then jump into rewriting and cleaning up the material I’d already written. This book will be ready to go to production on 31 January.

I’ve never yet been happy with a book at the point I have to let go of it and let production do their magic, and this one is no exception. As our friends Mary and Paul can confirm, I’ve been walking around for weeks now, muttering “I HATE biology!” Of course, before that it was “I HATE forensics!” and before that it was “I HATE chemistry!” And I don’t doubt that at some point it’ll be “I HATE physics!”

The good news is that the time between to-production on 31 January and when the book is actually published in April or May gives me a cooling off period. When I finally hold the printed book in my hands, I’ll flip it open to a random page and immediately spot an error. It happens every time. But then I’ll start paging through it and decide, hey, this is actually a pretty good book. That happens every time, too.


09:41 – Well, this is interesting. Italy, which is paying unsustainable interest rates with no relief in sight, has basically told the EU, “give us money or we’ll depart the euro and withdraw from the EU.” Of course, Monti didn’t phrase it exactly that way, but the meaning is clear. If Germany doesn’t pay Italy’s bills, which Germany is not going to do, Italy will leave the EU. And Italy has metric boatload of debt to sell in the near future. It’s paying over 7% now. I shudder to think what it’ll be paying soon.

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Tuesday, 10 January 2012

08:00 – With three weeks until deadline, I’m in the home stretch on the biology book now. I’ve allocated the rest of this week to finishing up two lab sessions that are now in progress, one the vertebrate survey and the other about the life cycle (cell division/mitosis). Once those are complete, I’ll spend a few days doing a quick run-through of all the lab session chapters, cleaning them up and making them consistent before I send them off to reviewers. Then I’ll finish up the Preface and Introduction chapters and start incorporating comments from the editors.

Someone on the Well-Trained Minds forums posted a query yesterday about scanning her old color negatives to produce digital image files. She’d found the Epson Perfection V300 Photo Scanner on Amazon.com for $80 and asked if that would do what she needed. My old Epson 3450 scanner died some time ago, and I’ve had replacing it on my to-do list since then. I checked and found that the V300 is Linux-compatible, so I replied and told her that I’d just ordered one and if she wanted to hold off for a while I’d test it by scanning some of our old color negatives and let her know how it worked.

Barbara is mad at me because of my reaction to a story in the newspaper this morning. Apparently, she was talking about it with her friends at work yesterday. Some woman couldn’t find her dog, so she went and looked in her neighbor’s window–which I’m sure is what any of us would do if we couldn’t find our dogs–and saw him having sex with the dog. They got a DNA sample from the dog, which they had a vet analyze. The DNA matched, so they arrested the guy. When Barbara told me what had happened, I started to laugh. She was not amused. “This isn’t funny!”, she said. “It’s disgusting.” The more I laughed, the more trouble I was in. Must be a girl thing.


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Monday, 9 January 2012

08:17 – Costco run and dinner with Mary and Paul yesterday.

There was an article in the paper this morning about a rash of incidents of coyotes snatching small pets. Apparently, they’ll actually jump a fence, seize a cat or small dog, and jump the fence again holding the prey. Not that we have to worry about Colin. If there’s one thing a coyote is afraid of, it’s a wolf. Wolves kill coyotes for sport. And Colin is wolf-like enough to terrify any coyote. Not to mention that he outweighs a large male coyote by a factor of two.

Our natural gas logs won’t stay lit. We had them installed in 1996, immediately after an ice storm had left us without power for four days. Since then, they’d periodically refuse to stay lit. I’d always just used canned air to blow out the oxygen sensor and thermocouple area and everything would usually be fine. If not, I’d remove the concrete logs, vacuum out the thing, and then blow it with canned air.

This time, it didn’t work. We started having problems a week or so ago. I tried blowing them out, and it didn’t work. The pilot light would stay lit but when I turned on the gas the logs would burn for five or ten minutes and then shut off. So yesterday we did the vacuuming thing and re-lit the pilot light. The pilot light was still burning this morning, so I fired up the logs. They burned for five minutes and turned off.

Barbara dug out the manual and invoice. I called Piedmont Natural Gas this morning. It’s not an emergency, so they won’t be able to come out to look at them until tomorrow. I hope they can repair them easily. The company that made the logs went bankrupt in 2002, so we may be out of luck if a new part is needed. Worst case, we’ll replace them. We sure don’t want to be without them if we have another long-term power failure.


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Sunday, 8 January 2012

07:44 – This will probably be my last post for a while, and one of few I’ll make between now and my drop-dead book deadline on 31 January.

I thought this comment, which was posted yesterday, deserved more of a response than I could give it in the comments section.

RBT, I have a couple questions relating to your home science books. I don’t recall seeing them asked before, but apologies if they’ve been asked and answered already.

Is the Forensics book likely to be available in the next year or so, or ever? I gather there was an ownership or other legal issue. This is of interest to me because one of my kids is interested in chemistry and biology but his eyes light up when discussing forensics.

Of the Chemistry, Biology, and possible Forensics books and lab sets, is there any required or recommended order? I’ll be getting one of the kits for this coming summer when he’s with me and the second for the following summer. I’m too ignorant to have an informed opinion. (I took Bio and Chem in high school, but that was 30 years ago and the labs were minimal with junk scopes and balances. But that’s ok. The football and basketball teams were well funded, so the important stuff was taken care of.)

Thanks (and best wishes for continued growth and profitability)

I have no idea when (or if) the forensics lab book will be published. The only issue that’s kept it on the shelf until now is that the (print) publishing environment has been very challenging over the last few years. When O’Reilly/MAKE decides to put a book into print, they have to judge whether the cost of doing so is likely to be returned with a profit from sales of that book. Four-color books (like the forensics lab book) have historically been very expensive to produce and print. There’s also a trade-off between print run size and cost per book, but of course printing a whole bunch of copies also incurs warehousing costs and risks having too many copies that don’t sell.

Originally I of course envisioned the biology book I’m working on now as a four-color title, but it soon became clear when I was pitching it to O’Reilly/MAKE that the numbers just wouldn’t support the cost and risk of doing it in four-color. But then a couple months ago my editor emailed with some good news. O’Reilly/MAKE is changing over from the traditional style of offset printing to print-on-demand, at least for four-color titles. That reduces risks a lot. Instead of doing a print run of, say, 25,000 copies of a four-color book, which ain’t cheap, they can do only as many POD copies as needed at one time. That greatly cuts down on inventory cost, warehousing cost, and so on, which in turn made it practical to do the biology book in four color.

Four-color POD may make it practical to do the forensics lab book in four-color as well, and I’ve already spoken to my editor about that idea. If we do that, I’m going to have to rewrite the entire book to build it around a custom kit that we’ll put together and sell. That’s for the benefit of the readers. The current draft of the forensics lab book is written like the chemistry lab book: it assumes lab equipment and chemicals that are rather costly (compared to most homeschoolers’ budgets). By rewriting the forensics book around a custom kit, I can do two things: First, make it much more affordable (because buying stuff piecemeal is much more expensive than just buying a kit that has test solutions and so forth already made up). Second, I can do lab sessions that it wouldn’t be practical to do (if only on the basis of cost) without access to the resources of a custom kit.

One way or another, I intend to have the forensic science kits available before start of the autumn 2012 semester, and I hope to have them available in time for summer session. If we can’t get the forensics book into print by then, I’ll simply include a PDF of the manual. It won’t be the full forensics book, but it will cover all the labs comprehensively. Believe me, your son is by no means alone. Kids are fascinated with real forensic science, and many of them would love the chance to do real forensic work themselves. I mean real stuff, as in what real forensics labs do every day.

As far as sequence, the traditional method for academic/science track students was biology in 9th grade, chemistry in 10th, physics in 11th, and an advanced science in 12th. In some cases, students took more than one science class per year. For example, I did biology in 9th, chemistry and a second independent-study biology course in 10th, physics and a second chemistry course in 11th, and a second physics course and third independent-study chemistry course in 12th. (That was an extremely heavy science load, even back in the 60’s.) The traditional sequence has less to do with the sciences themselves and more to do with math. A first-year biology course required no advanced math, and so is suitable for 9th or even 8th grade. First-year chemistry requires at least algebra II, so is usually scheduled for 10th. First-year physics requires geometry/trigonometry, and so is usually scheduled for 11th. Second-year physics really should have calculus and differential equations as prerequisites, but is often scheduled for 12th grade at the same time students are taking calc/diff-e.

My own opinion is that forensic science is an ideal first lab course. It’s cross-discipline, incorporating elements of biology, chemistry, physics, earth science, and the other hard sciences, but it typically doesn’t require advanced math. Also, it doesn’t hurt that, as you say, kids are fascinated by it.


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Saturday, 7 January 2012

09:14 – Of course, I couldn’t help myself. When I started thinking yesterday about doing a lab session on mitosis and meiosis, I just had to dive in and get some of my thoughts recorded. I ended up stubbing out that lab session and shooting some images.

That got me thinking about equipment limitations. I was shooting images of a prepared slide of onion root tip mitosis, with several mitotic phases visible in one 400X field of view. I have a truly excellent Chinese microscope, a National Optical model 161 with ASC objectives, but it’s still a Chinese microscope and it still has achromatic objectives. As I was trying to count chromosomes at 1000X, I found myself wondering just how much difference it would make to be using a Zeiss or Leitz model with plan apochromatic objectives. I suspect that detail that was just on the edge of visibility with my microscope would have been clear and easily discriminated with the Zeiss or Leitz scope. Of course, just one objective lens for one of those scopes can cost $5,000 or more, and a complete tricked-out scope with all the options can easily run $50,000.

I just answered a question this morning over on the Well-Trained Minds forum about National Optical microscopes versus no-name/house-branded Chinese microscopes. As usual, a lot of forum members say they bought XXX model and they’re very happy with it. Which is fine. I’m glad they’re happy with what they have, but the reason they’re happy is that they can see something when they look into the eyepiece. They have no basis for comparison, and few of them would know a good microscope if it bit them. If I could sit them down to do a side-by-side comparison among their $250 microscopes, a $500 National Optical scope, and a $5,000 Leitz scope, the scales would fall from their eyes.

Of course, I also recognize that the difference between $250 and $500 may be a deal breaker for a lot of homeschool families. And the truth is that any homeschooler is much better off with whatever microscope they can afford than with no microscope at all. So I suppose I should just shut up about it.


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Friday, 6 January 2012

08:11 – I finished shooting images for the vertebrates lab session yesterday, except for a few that I’m waiting to receive prepared slides for. This will be my all-time record for one lab session. Something between 50 and 60 images. Now I’ll spend the next two or three days writing the text.

Once I finish that, I’m going to go back and add in at least one or two lab sessions in earlier chapters. I’d like to do one in the Life Processes group on mitosis and meiosis, but I’m not sure exactly how to do that as a lab session. It’s difficult to turn concepts that abstract into hands-on lab work, particularly since we’ll be dealing with chromosomes, which are tiny and difficult to see, let alone count or observe details. I guess I’ll figure something out.


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Thursday, 5 January 2012

09:19 – I just shipped the first chemistry kit of the new year, what I hope is the first of many kits we’ll ship this year. In 2011, we just dipped our toes in the water, selling only one type of kit. In 2012, we’ll have several new kits on offer, starting with biology and forensics, and my goal is to sell at least 500 kits in total for the year 2012.

We’ll introduce the biology kits this spring, to correspond with the biology book being published for Maker Faire. Between completing the book at the end of this month and when the book is published, we’ll be putting together a starting inventory of biology kits, but we’ll also be working on the forensics kit and documentation, which we intend to begin shipping at around the same time, in time for summer session and early orders for autumn semester. Over the summer, we’ll be working on writing documentation for and designing an AP Chemistry kit, which should be available this autumn.

At that point, I plan to begin working on “lite” chemistry and biology kits, for homeschool students who won’t go on to major in a hard science in college but need a standard science lab course. Those kits will be designed to offer a less rigorous but still useful exposure to lab science, and will sell for around 75% of the prices of the more comprehensive and rigorous kits. Call it $120 shipped versus $160.

Meanwhile, I’m still shooting images for the vertebrates chapter. I’ve found that using Live View heavily really drains the battery, so I always keep the spare one charged.


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Tuesday, 3 January 2012

08:00 – I see that a jogger in Chicago was savagely attacked by two pit bulls, which persisted in their attack despite the attempts of a bystander to drive them off with a baseball bat. The cops eventually shot the dogs. What surprised me was that the article mentioned that this was not normal pit bull behavior, and that the dogs must have been abused.

Pit bulls have a horrible reputation, of course, but the truth is that they’re normally sweet, gentle dogs, at least toward people. Pit bulls were bred to fight other dogs, and I would never trust a pit bull around other dogs. But they were also bred to remove any aggressiveness whatsoever toward humans. That was crucial for the safety of the handlers, who had to handle dogs coming out of the pits after fights, when they were injured. Any dog who showed even the slightest aggressiveness toward humans, even if the dog was injured, was ruthlessly culled.


I’m still working heads down on the vertebrates chapter. I’d planned to do a lab session on animal behavior using a couple of mice. Barbara says she won’t have any mice around here. I offered to give them to Colin to play with afterwards, but she still says no deal.

Not that Colin would hurt the mice. I remember the time Duncan caught a chipmunk out in the yard. It had strayed too far from its burrow, and Duncan pounced. He came up with the chipmunk in his mouth and pranced around for a while, showing off his prey. I yelled at him to let the chipmunk go and–I am not making this up–he carried it back over to its burrow and dropped it. At first I thought it was dead because it didn’t move, but apparently it was just stunned. Duncan snouted it towards its burrow a couple of times and it finally woke up and scampered into its burrow. My best guess is that Duncan considered the chipmunk to be a very small sheep.


13:38 – I’m sure all of us are eagerly awaiting the results from Iowa. There’s one thing I don’t understand, though. According to all the political commentators, Iowa is so important that if Romney wins it’s game over for Paul and the rest of the Republican hopefuls. But if Paul wins, which seems about equally likely from all the polls, it doesn’t matter. Huh? A little biased, are we?

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Monday, 2 January 2012

08:50 – I sent off the chapter on arthropods yesterday and got a good start on chordates, although I decided to change the focus from chordates to vertebrates. Right now, I’m shooting lots of photomicrographs. I’m using lots of images to minimize the need for readers to have complete sets of prepared slides. The images are not a perfect substitute for slides by any means, but they’re better than nothing, which is what many readers will have.

If I were doing this book again, I’d start by finding a high resolution video camera, say 6+ MP, and shooting video of all the slides, tweaking the focus as the video was captured. I’d then use stacking software to build composite images to eliminate depth of field problems. Of course, that would have added a lot more work, both in the shooting and the processing. Even on a fast six-core system with gobs of memory, processing a large stack of high resolution images into the composite could require many hours of processing per image.


After nine days at home, Barbara just headed back to work. Colin, of course, is now used to having her at home, which means he’s likely to be demonic for the next few days. He’s sitting outside my office door whining right now. I’m taking that as a warning.

The good news is that Colin may get to see snow before much longer. We’ve had shirt-sleeve weather for a couple of weeks, but the high today is to be only 41 °F (5 °C), with the low tonight 23° (-5°) and the high tomorrow 35° (2°). There’s supposedly a 10% chance of some snow tonight. It’s always fun to watch a puppy experiencing snow for the first time. They all instinctively spread their toes, making what Barbara and I call “snow paws”, to get better traction and avoid sinking into the snow. Then, when they come back indoors, they lie there chewing and spitting on their paws to get the ice out from between their toes.

Someone at the house down on the corner just called 911 for the second time in about a week. An elderly woman lives there with (I think) her grandson, who’s maybe 12 years old. According to the neighbors, the kid is a perv. I’m not sure if he’s officially a sex offender or what exactly he’s accused of doing. Something like exposing himself to little girls, I think. At any rate, the fire truck just showed up, followed in quick succession by the police and ambulance. Last time, I waited until the ambulance hauled her off. Jasmine told me later that she has severe asthma, so presumably that’s what caused the 911 call this morning as well.

That got me wondering how (or if) 911 calls are billed by the city. Does each person get a certain number of free 911 calls per year with additional calls being charged for? It seems strange to bill for emergency calls if there’s a true emergency, but on the other hand I know that 911 is often abused. So do the fire department and police and ambulance just keep responding to frequent calls from one home, or do they start charging after X number? Or do they judge whether a reasonable lay-person would have considered the problem to be an emergency worth calling 911 for? I would imagine they have to show up no matter what, given the potential consequences, not to mention lawsuits and bad publicity. But there has to be some kind of boy-who-cried-wolf option for declining service to serial 911 abusers, doesn’t there?


09:44 – We’ve had some discussion here recently about free will and my arguments that it does not exist. Jerry Coyne has an interesting post up this morning, which links to his full article in USA Today. If you still believe that free will exists, which of course you must if you’re a Christian, read this article and think about it.


14:19 – Also found on Jerry Coyne’s site: a baby Linux getting a tummy rub.

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