Sunday, 6 July 2014

By on July 6th, 2014 in personal

09:02 – I’m beginning to believe that one really can find anything on the Internet. Yesterday, for some reason, I thought about a woman whose name I couldn’t remember, if indeed I’d ever known it. All I remembered was that about 30 or 35 years ago she’d done a series of commercials for No Nonsense pantyhose and that I’d also seen her playing a nurse in one episode of MASH. It took me about 30 seconds to find out that her name is Susan Blanchard. Here’s one of those commercials on YouTube.


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Saturday, 5 July 2014

By on July 5th, 2014 in personal

08:08 – As expected, Colin had a pretty rough evening, with all the fireworks. Around 4:20 p.m. Barbara left to meet her sister and friends for dinner. Colin and I had PB&J sandwiches and potato chips for dinner, and started watching Heartland re-runs. There wasn’t much noise while it was still full light out. I took Colin for a walk down the street around 9:00 p.m. It wasn’t full dark yet, and there was a fair amount of popping and a couple of booms around the neighborhood. Colin was nervous, but he kept walking. Around 9:30, the heavier stuff started. I turned up the volume on the TV to smother some of the noise. Colin lay on the sofa next to me, panting and with his ears down flat.

By the time Barbara got home around 11:15, we’d made it through 7 episodes of Heartland, along with half of the Christmas special. That took us to the halfway point in series four.

Oh, yeah. Long-term food storage note: I made two PB&J sandwiches, one with the last of a jar of Welch’s Grape Jelly that passed its best-by date two years ago, and the second with a jar Barbara had just purchased. The two were indistinguishable. And I’d bet money that the same would have been true had the old jar been ten years past its best-by date.

The dirty little secret that food manufacturers won’t admit to is that their best-by dates, particularly for canned/jarred foods, are completely arbitrary. They set them as short as they think they can get away with because they want to encourage people to throw out perfectly good food and buy more. I’ve been watching this happen for decades, and the expiration dates keep getting shorter. For a lot of products, if you compare the best-by date on a can purchased today versus a can of the same product purchased 20 or 30 years ago, you’ll find that supposed shelf life is half or less now what it was then. It’s a racket, and the upshot is that over the years Americans have discarded millions of tons of perfectly good food.


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Friday, 4 July 2014

By on July 4th, 2014 in personal
Happy Birthday USA!

As you celebrate Independence Day today, please take a moment to think about the men and women of our armed forces, past and present, who have willingly risked, and all too often lost, everything to defend our freedom. I worry about America, but there can be nothing very wrong with a country that continues to produce men and women like them.


The coast apparently got nailed pretty badly, but we’ve seen no effects at all from the hurricane. No rain, no wind, not even any clouds. We’re not doing anything special for the holiday. Barbara is doing stuff in the yard and later maybe some kit stuff. She’s meeting her sister and a friend for dinner and then going to watch the fireworks. Colin and I will watch Heartland reruns until Barbara returns. He’s terrified of thunderstorms and fireworks, so I’ll keep the sound turned up and let him cower on the sofa beside me until Barbara gets home.


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Thursday, 3 July 2014

By on July 3rd, 2014 in news, science kits

07:29 – Fourteen months ago, I mentioned that Joe Hester, who lives down the street from us, had been charged with sex offenses against a student in the high school where he taught. This morning’s paper reports the resolution of that case. Mr. Hester was sentenced to a prison term of 7 years and 10 months to 14 years and 5 months and was ordered to register as a sex offender for 30 years following his release. All of that for what I suspect was probably consensual activity with a 15-year-old girl. As Barbara said, the punishment was all out of proportion to the crime. This guy will spend more time in prison than the habitual drunk driver who killed the mother of one of Barbara’s co-workers recently. I don’t know Joe. This all happened very soon after he and his wife bought the house down the street. I’ve only talked with the guy once for a few minutes, and have never done more than shout hello to his wife. But he seemed like a nice enough guy. And now he’s ruined not just his own life, but his wife’s as well.


12:21 – I’ve been dithering for a while about doing an AP Chemistry kit. I’d originally intended to introduce one in 2012, but the College Board had announced that they’d have a completely revised set of AP Chemistry labs in 2013. So I waited on those. I wasn’t happy when I saw what CB had done. They reduced the number of labs and (as far as I’m concerned) dumbed them down considerably.

To do the labs as specified, a homeschooler needs an accurate balance/scale. That’s not a problem. One can buy an electronic scale with 100 or 200 g capacity and centigram (0.01 g) resolution on Amazon for $10. A balance with 20 g capacity and milligram (0.001 g) resolution costs about $20. That’s doable for most homeschoolers. But the new labs also require a visible-light spectrophotometer (or at least a colorimeter) and a pH meter. A pH meter with useful resolution and accuracy runs $100 or more, and even the least expensive standard spectrophotometers start at $500 and go up rapidly from there.

I’d about decided to do a lab kit that covered the new AP Chemistry labs as closely as possible without requiring a lot of expensive equipment, but unfortunately “as closely as possible” wouldn’t have been very close at all. Part of the AP Chemistry lab experience is supposed to be learning to use this type of equipment.

I finally decided to do an AP Chemistry lab kit that uses an inexpensive electronic balance, that $100 pH meter, the $115 Vernier Colorimeter and the $61 Vernier Go!Link interface. The balance and pH meter I already have. I just ordered the Vernier stuff, which should arrive next week. The Vernier colorimeter isn’t a perfect solution. Unlike a true spectrophotometer, which allows varying the wavelength of the light continuously or in very small increments, the colorimeter offers only four discrete wavelengths, but that suffices to teach the important concepts.

I think I can take the balance(s) as a given, but there will be many homeschool parents who do not want to or cannot afford to spend $100 on a pH meter or $176 on the colorimeter and interface. For them, I’ll provide data that I gather myself and that their students can use to graph and analyze as they would if they actually had the instruments. It won’t be the full lab experience, obviously, but it’ll be a lot better than nothing.

I’m also concerned about the dumbing down thing. The truth is that our standard CK01A kit, which we specify as honors first-year chemistry level, is considerably more rigorous than the new AP Chemistry, which is supposedly second-year level. So, I plan to do the AP Chemistry labs as specified, but to fill out the kit manual with additional lab sessions that are actually of appropriate rigor for a second-year chemistry lab course for students who plan to go on to major in STEM at college.

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Wednesday, 2 July 2014

By on July 2nd, 2014 in personal

08:02 – Barbara and I are binge-watching series four of Downton Abbey on Amazon streaming. We’ll finish the final three episodes tonight. We generally keep two or three series in progress. Once we finish Downton Abbey, we’ll be down to just Dawson’s Creek on Netflix streaming. We’re about halfway through that, so we’ll add something else, probably The Wire on Amazon streaming.


09:52 – I think Amazon is screwing with me. They “reward” frequent customers by increasing the prices they charge, apparently on the assumption that satisfied customers won’t bother to compare prices. Over the last few months, I’ve noticed that Amazon is getting less and less competitive, so I’ve cut back on purchases from them. I used to check their dynamic pricing changes by getting prices on something while I wasn’t logged in and then logging in to compare the original prices with the logged-in prices. There was sometimes no difference, but quite often the logged-in prices were higher, sometimes significantly so. And even when they aren’t, Amazon often isn’t competitive with other vendors. That “free shipping” they offer with Prime turns out not to be so free, and even their non-Prime prices are often considerably higher than those of alternative vendors.

For example, I just checked this morning to see how much Amazon was charging for Keystone Meats All Natural Ground Beef, 28 Ounce. Amazon wanted $10.77 per can, whether or not I was logged in. So I went over to the Keystone Meats website, where I found that they were selling a case of 12 cans for $80. Even with $20.62 shipping that comes to only $8.39 per can, so Amazon is charging about a 28% premium.

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Tuesday, 1 July 2014

By on July 1st, 2014 in personal, science kits

07:51 – Barbara is delighted with her new garage doors. I almost dated this entry “Tuesday, 31 June 2014” because that’s what the installer dated the installation sticker on the doors.

I’m still designing and writing up lab sessions for the Earth & Space Science kit. Until yesterday, I had a gaping hole for the group on Plate Tectonics, Earthquakes, and Volcanoes”, none of which are exactly easy to model/simulate at home. Fortunately, I’ve come up with a few ideas to test.


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Monday, 30 June 2014

By on June 30th, 2014 in personal

09:32 – We visited Sam’s Club yesterday with Frances and Al, who are members of both Costco and Sam’s. On items that both carry, the prices were very similar, a bit higher or lower, but nothing that would make it worth driving across the street. In this case, literally. The two are within about a quarter mile (400 meters) of each other.

From the appearance of the customers and the cars out in the lot, the two obviously have different customer demographics, albeit with a fair amount of overlap. Costco is mostly middle-class to upper-middle-class customers, while Sam’s is mostly middle-class to lower-middle-class. I did notice that Sam’s staff seemed a lot friendlier than typical WalMart staff, although not nearly as friendly as Costco staff.

At any rate, we ended up filling a shopping cart with mostly canned goods–cases of Campbell’s creamy and chunky soups, canned meats and vegetables, Chef Boyardee, and so on. Barbara also picked up some frozen stuff and a couple gallons of orange juice. The total was only $264, so it wasn’t a big run.

If Frances is willing to take us, we may try visiting the other Sam’s Club in town, which is much closer to us. But I think Barbara and I are agreed that we probably won’t bother joining. We get most of what we need at Costco, and Frances said we were welcome to meet them at Sam’s any time we wanted to do a run there.


11:24 – The guy just showed up to replace our garage doors. The existing ones are uninsulated single-layer steel, and have been there since not long after we moved into this house in 1987. The new ones are also steel, but two-layer with a layer of R10 insulation between them.

We got two quotes, the first from Costco and the second from the company that replaced one of the openers a couple years ago. The two quotes were within $50 of each other, straddling $1,700 including tax. The Costco contractor was going to replace the tracks. The second guy said he could replace the tracks if we wanted but the existing ones were perfectly good, and in fact were better than new tracks, which are made of lighter-gauge steel. The second contractor also showed us the difference between the hardware they used and the hardware the Costco contractor would use. The second guy’s hinges and rollers were significantly better, and the opener they planned to install was also heavier duty. So we went with the second contractor for $50 or so more.

Supposedly it’ll take three or four hours for the installation. Colin is outraged at what he hears going on down there, and I suspect I won’t get much done until late this afternoon.

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Sunday, 29 June 2014

By on June 29th, 2014 in personal, technology

10:24 – We’re doing the usual Sunday stuff.

Yesterday I moved the canned dry goods we purchased from the LDS store off the steel shelving unit and onto a pallet I built along one wall from 2×2 spacers and 1×6 boards. Keeping that stuff on the steel shelving unit was a waste of heavy-duty shelving that we can use for canned soups, vegetables, fruits, etc. The LDS store stuff is in cases of six #10 cans each, and the cases stack just fine without shelves to separate them. A space 8 feet (2.5 meters) wide by 40″ (1 meter) high by 13″ (33 cm) deep is sufficient to stack 25 cases 5×5. Depending on contents, the cases range in weight from about 13 to 37 pounds (6 to 17 kilos), so stacking them five high isn’t a problem.

I’ve also claimed some unused space in our full-size vertical freezer, which I’ll use to store small, high-value items, particularly those with shorter shelf lives. The rule of thumb in chemistry is that each change of 10 degrees Celsius doubles/halves the rate of a reaction. In a freezer at -20C versus room temperature of 20C, that 40C difference is four doublings, or a factor of 16X. In other words, an item that has a one-year shelf life at +20C can be expected to have a sixteen-year shelf life at -20C. And there’s no drawback to keeping that unused space filled. The converse, in fact. If we have a power failure, the more mass that’s in that freezer at -20C, the longer the contents will stay cold.


11:21 – I hate it when updates break stuff. Barbara has a Sansa Fuze MP3 player. For years, every two or three months I’ve refilled it with music simply by connecting it to a USB port and having it recognized as a USB mass storage device. This morning, I plugged it in and got an error. Ubuntu 14.04 said it was “unable to open MTP device”. A quick search turned up the solution. I had to go into settings on the Fuze and change the USB settings from Autodetect to MSC. I wish that Linux developers would adopt as their Prime Directive “DO NOT BREAK SOMETHING THAT ALREADY WORKS”.

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Saturday, 28 June 2014

By on June 28th, 2014 in news

08:41 – Another front-page article in the paper this morning about the death of the child in the school bus incident, this one describing how the prosecution’s case fell apart. Everyone seems to agree that the prosecution was not at fault and did the right thing by going for the misdemeanor plea deal after the case ended in a mistrial. I disagree. I think they should have dismissed the charges and let the guy walk. They had no evidence that he’d committed any crime whatsoever, and strong evidence that what the driver had claimed happened was exactly what had happened.

All of that said, this guy is a moron. Who else drives at 45 MPH past a stopped school bus with its yellow lights flashing? Any normal person in that situation would take his foot off the accelerator, slow down, and be ready to brake. This guy just blew past the bus at 45 MPH, struck the child, and tossed his body 125 feet. So, we have a dead child who’d done nothing wrong and two adults who at the very least showed no sense. One of those adults will spend 30 days in jail, which at least may give him the opportunity to think about what happened. And then there’s the school bus driver, whose actions in turning around and sitting stopped with only the yellow lights flashing were in violation of policy and were at least in part responsible for the child’s death. As far as I know, she faces no disciplinary action, let alone termination.


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Friday, 27 June 2014

By on June 27th, 2014 in science kits

09:00 – I do wish the USPS would stop “improving” its Click-N-Ship website. A couple of months ago they changed the input screen for shipments to Canada. There used to be a drop-down list at the top of the form where you had to pick the province. The rest of the fields were all free text-entry fields. Now, you still have to pick the province from the drop-down list at the top and you can then enter free text for the addressee’s name, street address, and so on, but then you get to drop-down list hell. For some reason, you again have to choose the province from a drop-down list. Then, instead of being able to type in the city name, you have to choose it from a (very long) drop-down list of cities/towns in that province. Then, instead of being able to type in the postal code, which in Canada takes the form X9X 9X9, you have to choose it from a drop-down list of postal codes within the city you chose. And it doesn’t provide full postal codes, only the first three bytes, with nowhere to enter the remainder of the postal code.

So, yesterday morning I had a kit to ship to Canada. The address the buyer provided was Toronto, ONT M3A 9X9. So I chose Ontario, followed by Toronto, but “M3A” wasn’t on the list of postal codes. So I searched Google for her full postal code and found out that as far as USPS was concerned it was in North York, a part of the Toronto metro area. So I selected the city name as North York and picked M3A from the drop-down list. When I printed the postage label, the address was in the form “M3A Toronto ONT”. Figuring that M3A wouldn’t suffice, I used a pen to print the full postal code on the label and all three copies of the customs document. Geez.

But at least USPS let me pay for that label without giving me the “Payment method declined…” error message. Same thing around lunchtime, when I ran another batch of labels. Then, mid-afternoon, I tried to print another label for an order I’d just gotten. I was in a hurry because it was almost time for USPS to show up. And, of course, when I tried to pay for that label, I got the dreaded “Payment method declined…” error message. I tried again to pay. No dice. I exited and restarted Firefox and tried to pay again. No dice. I fired up Chrome and tried to pay. No dice. So I restarted Firefox and tried to pay. This time, it worked and I was able to pay for and print the label.

Just as I clicked Print, the phone rang. It was USPS tech support calling, and the guy said it looked like I was having problems printing postage labels. I told him that I was, that this had been going on sporadically since January or February, and that in fact it was going on at the moment and that I’d only just gotten it to work for the label I’d just sent to the printer. The guy said he’d just fixed the problem with my account. I told him that his fix must not have worked because I was just now having the problem. He said he meant literally that he’d just fixed the problem as in two seconds before he dialed my number and that was why I’d just been able to pay for and print the label that I’d just sent to the printer. I thanked him and asked him what I should do if the problem recurred. He said it wouldn’t recur, that he’d permanently fixed the problem with my account, but if I ever did have a problem with Click-N-Ship to call him directly at the number he provided.


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