© Norman Sperling, October 13, 2012
Kitchen appliances come with absurdly short power cords. They say it's to prevent you from tripping over a longer cord when carrying it.
Short cords would be safe only if people use those appliances within that easy distance of appropriate plugs. But that just plain flat-out does not happen! Hasn't anybody looked at real-life kitchens? Homes and workplaces of all sorts?
People have to use extension cords to reach an outlet. This introduces more unsafe factors. The total length is unlikely to be "just right" and can't be too short, so it is usually too long. The extension cord is easily long enough to trip over. Extension cords are often rated for lower wattage than the appliance uses, risking fire.
So too-short cords breed resentment and frustration, cause further expense for extension cords, and probably induce more danger than they avert.
Instead, use a reel inside the appliance to dispense however much cord is needed. Give it the same kind of spring loading and lock/release used on tape measures. Every cord will be just the right length. For carrying, retract the whole cord back onto its reel. Then unreel the right length for its new position. Cord is cheap, springs are cheap, reels are cheap. The expense of sufficient volume to hold the stuff might be the biggest cost. That should be a good tradeoff for satisfying consumers and increasing true safety.
© Norman Sperling, September 20, 2012
Part of a series on Educational Star Parties:
Star Parties Designed for Students (July 7, 2012)
7 Spectral Types in 1 Big Loop (April 15, 2012)
Telescope Triplets (November 25, 2011)
At observing sessions, students and the public hear a whole lot of information, but don't keep notes, nor remember it too sharply. Remembering the data shouldn't be the main thrust anyway; seeing the objects is.
Prepare telescope trading cards, and object trading cards, to give to all comers:
* On each scope card, show a snazzy photo of the scope, its statistics, interesting background, and its proud owner/operator.
* On each object card, show a visual impression resembling what the observer actually sees; plus a more impressive astrophoto; the object's statistics, and interesting background. Include major catalog designations and nicknames.
Prepare plenty of these cards so scope operators and volunteers can hand out the right ones. Cards should hugely reinforce the educational experience, giving a tangible card to show to others (encouraging them to come); keeping the information from getting pathetically garbled; and reminding visitors how well they observed.
Kids already have LOTS of trading-card display sheets, boxes, and so on. They can handle the cards. And parents ought to strongly encourage these cards. Cards should cost a few cents to produce, are cheap and easy to update and replace, and easy to generate anew. It might cost a buck a kid for star parties and most musea, but should pay dividends in post-visit appreciation and word-of-mouth promotion.
All-day visitors to a big museum could amass a couple dozen cards, if they are given for every planetarium show and exhibit. They'll remind visitors for years of their visit. Visitors to other venues might get cards for flora, fauna, minerals, and cloud types along the way. Perhaps each hiking trail could have one, or even each "look at this" post.
Where attendees have smartphones, give them digital versions instead of cardboard cards.
© Norman Sperling, September 15, 2012
For all the guidebooks I've combed and all the historical technology I've plowed through, I should have known about the Collier Memorial State Park Logging Museum, but I didn't.
Tucked into a small state park on US-97 north of Klamath Falls in south-central Oregon, this is an absolute gem! They collect out-of-date equipment from the logging industry, and are re-arranging it into historical and thematic periods. Through their hardware, they can illustrate the progression from the muscle power of horses and oxen, to steam engines, to diesel engines. You can also see the progression from wood (which they used, as well as harvested), to iron, to steel. One of the excellent details in their signage was the slow fading in and out of the eras, rather than hard, sharp boundaries: each technology was kept as long as it was useful, and replaced when it wore out. A hundred diesels replaced a hundred steam engines over decades, not overnight.
Their knowledgeable volunteer guide showed me a great deal of detail, including how the 10-foot-high wheel haulers dragged logs, and how the steam donkeys could haul lumber, and themselves. The stronger the machines, the steeper the slopes on which they could work. An early horse-drawn road-grader sported a narrow blade, and the stronger the engines that pulled later ones, the bigger the blades could grow.
Most of the wooden equipment was handmade, of course. A lot of their gasoline and diesel equipment was made by Caterpillar and Case but they have several other makers too.
I've visited a lot of technology-through-time collections, but this one is decidedly different. Telescopes and microscopes operate in developed, protected environments, and look it. Cars interface with the great outdoors, but the outdoors are massively changed to accommodate them: we build smooth roads and service stations. Logging equipment is out in brutal nature, in the wild, coping with tough, heavy trees and boulders and canyons ... and they look it. No delicate fittings. No polish. No decoration. Enormous, strong wheels and treads. Fat, heavy cables and chains. Bulky, dented iron and steel housings. Heavily chipped paint. Repaired wheels. Patches and dings. Some equipment wasn't built strongly enough: all 3 tractors built by International/Mack have severely bent and dented hoods because that sheet-metal just couldn't stand up to logging in the wild.
The collection is obviously catch-as-catch-can. Logging companies donated 3 Caterpillar Thirty tractors, so they have 3, even though no story they tell requires that many. They have a big, complicated thresher because somebody donated it, not because farm equipment is part of their logging story. They should swap or sell such items to get more useful and relevant items or make improvements.
© Norman Sperling, September 5, 2012
The 4th-best apartment-for-rent ad that I answered was also a scam, just as the 3 better ones had been, and (judging from the responding eMail) it was from the same scammer as #2.
Craigslist claims it can't tell. More likely they don't care to bother.
Gmail's spam-spotters sure recognized them. But they just relegated their responses to the spam file, apparently based on the similarity of the wording to a lot of other mail they'd carried that had been flagged before.
I hear that law enforcement won't do much because they can't prove that the location of the offense is within their bounds. Mine all cited "West Africa" ... but why should that be truer than their offerings?
The scammers know that Craigslist hardly hinders them, Gmail merely redirects their mail to a different folder, and law enforcement leaves them alone. They get away with their scams because no one with evidence communicates with anyone else.
As long as Gmail and Craigslist operate in blissful independence, scammers will continue to exploit their hands-off attitude to scam money from the customers of both.
So here's a superb opening for Anonymous and White Hats. They want to right wrongs, don't they? They want to keep the internet open and effective, don't they? The using public should contribute thousands of exemplars, from which patterns could be recognized, from which the number and behavior of scammers can be determined. I suspect there are fewer than 1,000 originators of this misery, and I suspect that >90% can be identified this way.
Cooperate with selected targets (banks, merchants, Craigslist, eBay, ...) and media (eMail, ISPs, portals, ...), track down the crooks, document their takings, build overwhelming legal and moral evidence, and come down so hard on them that they'll not only cave in (and go to jail and pay restitution) but also deter anyone else from even trying. This may also expose government agencies and banks that cast blind eyes.
I sure would enjoy reading the stories of such rip-off artists, and their downfalls.