Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.
So we did the HersheyPark thing on the way back from our bicycling vacation and our young lady rode seven of their eleven roller coasters. Not being all that strong of stomach, I wimped out after two and contented myself with taking pictures.
I had decided to not lug a Big Camera and the tele-adapter along, seeing as how we’d be camping for four nights. That turned out to be a wise decision: it rained every night and everything we carried was damp. So I took pix with my Casio Z-850 pocket camera, which had been sealed in a ziplock bag most of the time, and that had to be good enough.
The Fahrenheit coaster is, they tell me, 121 feet tall and I was standing outside the fence about 100 feet from the base of the drop; the slant range was maybe 150 feet. I had plenty of time to set up and practice the shot, as the line was half an hour long. I filled the equivalent of two rolls of film with pix of people I don’t know while exploring a nine-dimensional parameter space & scrutinizing the results; pixels are cheap.
Most digital cameras, this one included, have a long delay between pushing the button and getting results. However, it has several “continuous shutter” modes and I picked the “high-speed” version that records three images in quick succession. There’s no indication of how much time passes between exposures, which probably depends more on the SD Card’s speed than anything else. The timestamp resolution is 1 second, which isn’t much help.
Anyhow, poking the shutter button when the train came over the top consistently produced one good picture as it descended.
Continuous Shutter Images
I fought all the other automation to a standstill:
Infinity focus
Shutter speed 1/1000 sec
Aperture f/5.1
The camera picked ISO 200, probably as a result of the “high speed” continuous shutter setting, and warned me that it wasn’t happy about doing that. This being a bright, sunlit day, the nominal exposure for that ISO speed would be 1/200 @ f/16. Two stops faster shutter and three stops bigger aperture should work out OK, as the subjects were on the down-sun side of the coaster. The camera has just two apertures (big and little) that, of course, vary with the zoom setting, so I didn’t have much leeway. I figured I could fix any minor exposure issues in the cough darkroom.
The tele end of the zoom range is equivalent to a 114 mm lens with 35 mm film, which is better than the beer-can-sized zoom on the SLR I used to lug around back in the day.
In round numbers:
the car is 30 feet long and the original image is two cars tall, call it 60 feet
the image is 2816 pixels tall
(60 * 12) / 2800 = maybe 1/4″ per pixel
Cropping the interesting part from the frame, goosing the gamma a smidge, and applying a touch of Unsharp Mask says that’s about right: you can see the expressions on their grainy little faces. National Geographic quality, it ain’t, but it’s OK for a pocket camera and pix of relatives.
Memo to Self: Would forcing the ISO down to 100 reduce the graininess a bit?
The instructions for our Weber gas grill would have us lavish more care on it than we do on our car, which isn’t actually saying much. Nonetheless, once a year I gotta clean the crud out, whether it needs it or not, because not even I believe heat kills that stuff.
Used to be, that was a thoroughly disgusting job of hand-scraping carbonized gunk and scrubbing gooey muck in cramped quarters. Having acquired a pressure washer, cleaning the grill is almost enough fun that I might do it more often. It even gets the mildew (or whatever that schmutz might be) off the wood handles & platforms, which I would have bet was impossible.
Pressure washer side effects
However, if you’re even a teensy bit fussier than we are about the looks of your castle, you might want to not lay the grates & “flavorizer bars” on the driveway to blast ’em clean. Turns out that the overspray strips the grunge right out of the top layer of asphalt, leaving a white trail behind.
The gear cover is an elaborate ten-pound iron casting, emblazoned with brass tags, and held in place by three 1/4-20 machine screws. The back gear covers, visible in the upper-left corner, are the same sort of wonderfully complex iron casting.
Make magazine, issue 17, has a snippet about an old sorghum press with instructions cast right into the machine, so you could literally RTFM: Read The Ferrous Metal. As it turns out, this 1928 South Bend lathe has instructions stamped into machined metal areas atop the change gear train: OIL.
Here’s a closeup…
Read The Ferrous Metal
Think about it: an iron casting, with machined-flat surfaces, stamped with instructions. How many man-hours did it take to get from raw material to finished product?
Saw this on a family bike ride. It’s atop a Central Hudson gas pipeline, pretty much directly across the Hudson from that gas storage tank, although on a local branch line.
Other such gas-pipeline signs have contact information, like the phone number, printed in red ink. Alas, red ink absorbs UV and eventually bleaches away. It’s not like this is an unknown phenomenon that’s happened here for the first time.
What’s odd about this, though, is that the pole supporting the sign and the pipe leading to the sampling head (?) were both recently repainted with nice red paint. One would think the painter would be empowered to report problems like this, but I’m guessing that job has been subcontracted out through so many layers that the actual guy-with-the-brush neither knows nor cares what he’s painting.
I’d report it, but I’m unwilling to invest half an hour being told that my call is important to them.
EXT. UPSTATE NY APARTMENT COMPLEX — EARLY AFTERNOON
Clouds
A STRANGER emerges from an apartment and walks through the adjacent parking lot to the complex’s central roadway. A late-middle-age white male, he is dressed casually in black trousers, red t-shirt with STAFF in large white letters on the back, well-worn blue-and-white pinstriped locomotive driver (“engineer”) cap, and dark sunglasses. His graying beard is trimmed short, but he is obviously overdue for his quarterly haircut. He carries a bulky black prosumer digital camera.
The bright blue sky is filled with large clouds from an approaching storm front and, opposite the sun, a cumulonimbus bank looms over the far horizon above a row of apartment buildings.
The Stranger studies the clouds, moves to various vantage points, examines the rest of the sky. He braces the camera against a road sign pole and fiddles extensively with the knobs & buttons while taking several pictures.
WOMAN #1 emerges from a building, enters a car, and drives along the central roadway. She slows, stops next to the Stranger, and rolls down her window.
WOMAN #1
What are you taking pictures of?
STRANGER
Those great clouds over there! Looks like we’re in for a real storm later today!
WOMAN #1
Oh. Have a nice day. (She rolls up the window and drives off)
The Stranger is joined an elderly COUPLE, WOMAN #2 who is probably his wife, and a teenage GIRL who vaguely resembles all of them. The Girl is wrapped in a large towel. They walk slowly through the apartment complex to the pool, appear baffled by the childproof latch on the gate, and are finally admitted by WOMAN #3 who shows them how to operate it.
INT. IN-GROUND POOL PATIO
They sit around a table in the corner, jockeying the uncomfortable plastic chairs for position in the shade cast by the table’s umbrella, while the Girl removes a towel to reveal a red swimsuit, enters the pool, and begins swimming laps.
Coming up for air
Various other PEOPLE occupy the area near the pool, including older couples, males of various ages, several curvaceous mid-twenty-ish females clad in revealing swim / sunbathing attire, and a group of middle-age couples.
The Stranger takes several pictures of the Girl in the pool.
Time passes.
The Stranger, realizing that he’s about to spend the next three hours sitting on his well-flattened butt in the van while driving home, stands up, stretches, and walks to the gate. He intently studies the labels on the childproof latch, which is misinterpreted as being baffled, and leaves the pool area.
EXT. APARTMENT COMPLEX ROADS
Manhole cover
The Stranger strolls around the apartment complex to the side entrance road, and returns along a different route. He seems to take a particular interest in drain grates, manhole covers, garage doors, and infrastructure in general. He scuffs the dirt from one manhole cover and takes a picture of it. He continues walking around the complex and returns to the pool.
His companions gather themselves together and emerge from the pool gate.
EXT. POOL AREA
A New York State Police car drives slowly into the complex through the side entrance. The TROOPER scans the area, spots the Stranger, and pulls up beside him.
TROOPER
Good day. How are you doing?
STRANGER
(Smiling) So far, so good.
TROOPER
What brings you here today?
STRANGER
We’re visiting my wife’s parents. (Gestures to indicate the Couple among his companions)
TROOPER
(Eyes the group) We’ve had a report of someone in the area taking pictures of buildings and possibly people.
STRANGER
Well, I’ve been taking pictures of clouds, a manhole cover, and my daughter. (Smiles) I think it’s still permitted for me to take her picture.
TROOPER
(Getting down to business) Your name?
STRANGER
(gives name, helpfully spells last name)
TROOPER
What’s your birth date?
STRANGER
(Gives a date long in the past)
TROOPER
(Typing on laptop PC) And your address?
STRANGER
(Gives city and state)
TROOPER
(With emphasis) Your street address.
STRANGER
(Gives street address)
TROOPER
Phone number?
STRANGER
(Gives phone number, repeats when trooper misses last four digits)
TROOPER
(Types, pauses, types, reads screen) Enjoy your stay.
Trooper drives off, leaving apartment complex through main entrance.
STRANGER
(To his companions) Well, I now have a police record tagged “suspicious behavior”.
The group walks back to the apartment while discussing recent events and their plans for the remainder of the Independence Day weekend.
EXT. APARTMENT COMPLEX
P.O.V. pulls back and ascends in Google-Earth fashion to show entire Adirondacks region. The Stranger assumes the role of voice-over INTERLOCUTOR. Fade to black during narration.
INTERLOCUTOR
Despite my pique, the Trooper performed his job properly and with decorum. While the opinions of my companions differ, I contend that once a 911 call has been received, the police must follow established procedures to resolve the complaint. The response depends on the initial report and what the Trooper finds during his approach.
The fault, if any is to be found, thus resides with people who have been recently trained to suspect once-normal behavior: anything they wouldn’t do is considered threatening, if not hostile, when done by someone they don’t recognize.
Photography, in particular, is now treated as reconnaissance for an assault. Unless it’s done by surveillance cameras, in which case it’s perfectly benign.
–THE END–
Perhaps you can tell a similar story.
Extra Credit
Explore these 27 parametric variations on the theme of Stranger:
Double Bonus
Consider the behaviour variation where a [white + casual + friendly] Stranger politely but firmly refuses to cooperate with the Trooper’s inquiries. Explore the range of perfectly legal and extremely unpleasant outcomes. Possible working title: “How to ruin the rest of your holiday weekend in five minutes flat”.
Update: Many internal links on Schneier’s blog are broken. As nearly as I can tell, all inter-word hyphens should now be underscores: the-war-on-the.html becomes the_war_on_the.html. Perhaps they switched the back-end database?
Just got a letter from Canada, allegedly from the Readers Digest Sweepstakes, but with a letterhead address of 1125 Cornell Ave, Atlanta GA 33412. The phone/fax number is 912-480-0353, oddly not a toll-free business number. The letter has medium production values, pixellated Readers Digest logos, surprisingly few typos, and a painfully ersatz signature.
I’m to believe I’ve won $255,069.00 in a contest I’ve never entered (the way I see constests, while you’ve got to play to win, entering doesn’t improve your chances of winning). The “69” is a nice touch, I’d say.
Enclosed is an exceedingly valid-looking check for $3892.91 “to help you cover any charges that may be required before you receive your funds.” Check number 1100912681, if you can believe that. It has excellent production values, a genuine artificial watermark on the back, and is nominally drawn on an actual Canadian bank.
Bogus check
Obviously, a fraud. International and postal, no less.
I’m impressed at the level of effort they went to, but it seems that with an actual telephone number (the address is surely faked), some branch of law enforcement should be able to fly right into their ears. No, I am not going to call that number…
I gave the FBI a tip, but I’m reasonably sure nothing will come of it.
[Update: Well, maybe the FBI didn’t do anything, but there’s an absolutely wonderful riff based on this letter. I’ll only quibble about the 57 Chevy… it was really a Studebaker.]
They’re doing well in their new home, building out comb on the foundation. The queen is in good shape, laying eggs as soon as the workers finish the cells. The workers seem to be feeding pollen directly to the larvae rather than storing it, which makes perfect sense. They’re taking two quarts of 1:1 sugar water every day!
Either you already know what this is all about or you really don’t want to know.
The Smell of Molten Projects in the Morning 