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Welcome to the family! It's a very hard to find item after Daytona Steel.
Specification:
MODEL CASE
Oyster, 40 mm, steel
OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown
DIAMETER
40 mm
MATERIAL
904L steel
BEZEL
Bidirectional rotatable 24-hour graduated bezel. Two-colour blue and black Cerachrom insert in ceramic, engraved numerals and graduations
WINDING CROWN
Screw-down, Triplock triple waterproofness system
CRYSTAL
Scratch-resistant sapphire, Cyclops lens (2.5x) over the date
WATER-RESISTANCE
Waterproof to 100 metres / 330 feet
MOVEMENT
Perpetual, mechanical, self-winding, GMT function
CALIBRE
3186, Manufacture Rolex
FUNCTIONS
Centre hour, minute and seconds hands. 24-hour display. Second time zone with independent rapid-setting of the hour hand. Instantaneous date. Stop-seconds for precise time setting
PRECISION
Officially certified Swiss chronometer (COSC)
OSCILLATOR
Paramagnetic blue Parachrom hairspring
WINDING
Bidirectional self-winding via Perpetual rotor
BRACELET
Oyster, flat three-piece links
BRACELET MATERIAL
904L steel
CASE
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link
NIKON F-801 (1988)
Set of photos taken with this camera
SPECIFICATIONS (from the instructions manual)
Type of camera - Integral-motor autofocus 35mm single-lens reflex
Picture format - 24mm x 36mm (standard 35mm film format)
Lens mount - Nikon F mount
Lens - AF Nikkor lenses, and other Nikon lenses with Nikon F mount (with limitation) available
Focus modes - Autofocus, and manual focus with electronic rangefinder
Autofocus Autofocus detection system - TTL phase detection system using Nikon advanced AM200 autofocus module
Autofocus detection range - Approx. EV minus I to EV 19 (at ISO100)
Autofocus actuation method - Single servo and continuous servo
Autofocus lock - Possible by lightly pressing shutter release button in Single Servo AF mode or by using AF Lock button
Electronic rangefinder - Available in manual focus mode with an AF Nikkor and other Ai-type Nikkor lenses with a maximum aperture of f/5.6 or faster
Exposure metering - Two types of exposure metering systems - Matrix Metering and Centre-Weighted
Exposure meter switch - Activated by lightly pressing shutter release button; stays on for approx. 8 sec. after lifting finger from button
Metering range - EV 0 to EV 21 (at ISO 100 with f/1.4 lens) f
Exposure modes - Programmed auto (PD, P, PH), shutter-priority auto (S), aperture-priority auto (A) and manual (M) modes
Programmed auto exposure control - Both shutter speed and aperture are set automatically; flexible program in one EV step possible
Shutter-priority auto exposure control - Aperture automatically selected to match manually set shutter speed
Aperture-priority auto exposure control - Shutter speed automatically selected to match manually set aperture
Manual exposure control - Both aperture and shutter speed are set manually
Shutter - Electro magnetically controlled vertical-travel focal-plane shutter
Shutter release - Electromagnetic shutter by motor trigger
Shutter speeds - Lithium niolbate oscillator-controlled speeds from 1/8000 to 30 sec.; electro-magnetically controlled long exposure at B setting
Viewfinder - Fixed eye level pentaprism High-eyepoint type; 0.75X magnification with 50mm lens set at infinity; 92% frame coverage
Eye point - Approx. 19mm
Eyepiece cover - Model DK-8 prevents stray light from entering viewfinder
Focusing screen - Nikon advanced B-type Briteview screen with central focus brackets for autofocus operation
Viewfinder information - The following LCD indications appear: focus indicators, exposure modes, shutter speeds/film speeds, aperture/ exposure compensation value, electronic analogue display, exposure compensation mark; ready-light LED; viewfinder display is illuminated automatically or by pressing the viewfinder illumination button
LCD information - The following indications appear: exposure modes, metering types, exposure compensation, electronic analogue display, shutter speeds/film speeds, aperture/exposure compensation value, film speed setting, DX-coded film speed setting, film advance mode, film installation, film advance and rewind, self-timer, multiple exposure, frame counter/ self-timer duration/number of multiple exposure
Electronic beeper - With power switch in beeper position, beeper sounds in the following cases: operation signals; (1) at end of film roll: (2) when film rewinding is complete; (3) during self-timer operation; alert signals; (1) for over- or underexposure and possible picture blur in PD, P, PH or A mode; (2) when lens is not set to the smallest aperture setting in PD, P, PH or S mode; (3) when non-DX-coded film, damaged film or film with an unacceptable DX code is loaded; (4) such as torn or damaged film during film advance
Auto exposure lock - Available via sliding the AE Lock lever while the meter in on
Film speed range - ISO 25 to 5000 for DX-coded film; ISO 6 to 6400 for manual setting
Film speed setting - At DX position, automatically set to ISO speed of DX-coded film used; with non-DX-coded film, ISO speed is set manually
Film loading - Film automatically advances to first frame when shutter release button is depressed once
Film advance - In S (Single-frame) shooting mode, film automatically advances one frame when shutter is released; in CH (Continuous High) or CL (Continuous Low) shooting mode, shots are taken as long as shutter release button is depressed; in CH mode, shooting speed is approx. 3.3fps, and in CL, approx., 2.0 fps (in Continuous Servo Autofocus or manual focus mode, with new batteries at normal temperatures, and a shutter speed faster than 1/125 sec. in manual exposure mode).
Frame counter - Accumulative type: counts back while film is rewinding
Film rewind - Automatically rewinds by pressing film rewind button and multiple exposure film rewind button; approx. 10 sec. per 24-exposure roll; stops automatically when film is rewound
Self-timer;- Electronically controlled; timer duration can be selected between 2 to 30 sec. in one sec. increments; blinking LED indicates self-timer operation; two-shot self-timer is possible; cancelable
Exposure compensation - Possible using exposure compensation button within ±5 EV range in 1/3 EV steps
Multiple exposure - Up to 9 exposures can be set
Depth of Field preview button;- Provides visual verification of depth of field; can be previewed in A or M mode
Reflex mirror - Automatic, instant-return type
Camera back - Hinged back; exchangeable with Nikon Multi-Control Back MF-21 or Data Back MF-20
Accessory shoe - Standard ISO-type hot-shoe contact; ready-light contact, TTL flash contact, monitor contact
Flash synchronization - 1/60 to 1/250 sec. in PD, P, PH or A mode; in S or M mode, shutter fires at speed set, and when set from /250 to 1/8000 sec., shutter is automatically set to 1/250 sec.; down to 30 sec. shutter is available by using SB-24 in rear-curtain sync
Flash ready-light - Viewfinder LED lights up when Nikon dedicated speedlight is ready to fire; links to warn of poor camera/speedlight connection or insufficient light for correct exposure
Autofocus flash photography - Possible with Nikon Autofocus speedlights SB-24, SB-23, SB-22 or B-20 etc.
Power source - Four AA-type batteries
Lens displayed - AF Nikkor 85 mm 1:1.8
I Invite you to visit my blog at Classic Cameras
Crane lifts clamshell bucket with excavated material from 8 foot drilled shaft. Foreground shows operator positioning oscillator machine over the hole for 8 foot shaft. The oscillator pushes casing down the hole at the same time clamshell bucket mounted on the crane is excavating soil inside the shaft. Courtesy ODOT photo.
s8100, SW Moody Project
LEFFER VRM 2500 OSCILLATOR
The Leffer hydraulic casing Oscillator has over 8 million ft-lbs of torque and 580 tons of extraction force. This machine is capable of drilling over 200 ft deep with a 2.5M oscillator casing.
This machine is used in caving soils where the bore hole requires casing to the bottom of the hole.
This is Elektro. His brain is bigger than yours, and it consists of 48 electrical relays.
If you know the story about the real Elektro robot, you will know what that meant.
If you don´t, Elektro actually exists in real life, he is just a bit simpler.He was built by Westinghouse electronics in 1938, and was made famous dring the New York World fair 1939. So we can say that he probably was the worlds first famous robot. In 1940 he appeared at the fair agan with his new pet, Sparko the dog. The dog disappeared a few years later. According to the legend, Sparko was trashed after he got hit by a car.
He was standing on the stage, and was "interwieved" by the company´s spokesman. Although Elektro couldn´t "hear" words. Instead he counted syllables that his "assistant" spoke erratically in to a microphone, and after a second or two the 7 foot tall art deco tinman reacted. He could walk slowly back and forth, move his head and arms, recognize colors (mostly red and green), count on his fingers, blow balloons, smoke, tell bad jokes, and be rude to the interwiever. He knew abot 700 words.
His voice was prerecorded on to a load of LP 78rpm records who were (together with his giant relay operated "brain") hidden behind a black curtain. They also liked to show that Elektro had a "healthy" interest in women.
He toured the united states for a few years, and acted in a few movies (both as himself and as a robot named Thinko), and he was exhibited at the Pacific Ocean Park in Venice, California in the late 50´s and early 60´s. But he gradually slipped out of the limelight, and by the end of the 60´s, the amazing talking metalman was forgotten. His head was given as a present to a retiring Westinghouse engineer, and his body was scrapped.
Luckily he was saved from the scrap yard , and is now living at the Mansfield Memorial Museum.
Although he was in quite a bad shape, Elektro was in the music business in 1992. He did some vocals for the dance band Meat Beat Manifesto´s song "Original Control (Version 2)".
This drawing was made in December 2009, in the earlier stages of the project. When it was mostly about the inside of electronics. The story had already started to revolve around space and what ever lies beyond what our weak eyes can see, but I really wanted to do this drawing before concentrating on more far out subjects. It was also my project for the Christmass exhibition at Strykejernet art school in Oslo.
Like the real Elektro the drawing enjoyed a small "renaissance" as it attended a group exhibition at Galleri Neuf (Oslo) in February this year. The picture is from the day after the the exhibiton ended. Sadly, I don´t have very good pictures of him as I´m a terrible photographer, and Elektro have moved to a new owner.
Since I was, sort of, travelling back in time with this drawing, I thought it would be fun to throw in a time traveller. Dr. Emmett Brown is hiding in there somewhere. Ferdinand Porsche is there too. He is supervising the aircooled boxer engine that drives Elektro´s legs. If i remember it and feel like it at the same time, i may post some close up details.
If you are interested in drawings without squids, feel free to visit my other page.
This is a quick pic of the upcoming Macbeth Dual SV Filter. SV stands for State Variable. From the manufacturer: "What you see is 2 x 12 dB/Octave filters with Low Pass/Band Pass/High Pass responses- there is a particular silkyness to the sound of this unit which is fantastic as a stereo filter! This dual filter can be cascaded into one 24dB/Octave SVF which give it a far deeper slope!"
We expect stock in roughly 2 months and the price will be the same as the X-Series Oscillator.
LINK: muffwiggler.com/forum/viewtopic.php?t=31638&sid=e96da... .
Laboratory of Photonics and Quantum Measurements
École Polytechnique Fédérale de Lausanne, EPFL
Swiss Federal Institute of Technology
Here's another photo of the new Dual SV Filter, this time pictured with the X-Series Oscillator. These modules are not just smaller and more economical variants of the Dual Oscillator and Backend Filter, they have different features too. The Oscillator has a wide range osc sweep knob, a switch for LFO mode as well as suboscillator outputs. The Dual SV Filter has 2 x 12db octave multimode filters and you can use it in stereo.
Steven Strogatz has a way of finding rhythm in places most people overlook. In his office at Malott Hall at Cornell, and later in the Space Sciences Building at the SPIF, that rhythm came alive in a simple but elegant experiment. Two small metronomes ticked on a shared platform, gradually aligning their beats as if discovering a shared pulse. Strogatz leaned in, smiling as the synchronization unfolded. The moment captured both his joy and his curiosity, the twin forces that have guided his life in mathematics.
For decades, Strogatz has explored the hidden order beneath the world’s apparent chaos. His work has spanned from the synchrony of fireflies flashing in unison to the oscillations of the human heart. He has revealed how patterns emerge naturally when systems, whether biological, physical, or social, interact in just the right way. His research on coupled oscillators, complex networks, and nonlinear dynamics has reshaped how scientists think about everything from brain function to the spread of ideas.
At Cornell, Strogatz is known as a gifted communicator who bridges the gap between advanced mathematics and everyday experience. His lectures attract students from across the university. In books such as Sync, The Joy of x, and Infinite Powers, he writes with clarity and wonder, turning abstract ideas into stories that feel alive. His voice carries the same enthusiasm whether he is explaining calculus or describing the geometry of friendship.
What sets him apart is not only his command of mathematics but his warmth and wit. He listens as carefully as he speaks, often finding metaphors in the natural world or in a casual conversation with a colleague. His humor disarms. His curiosity invites. Watching him adjust the metronomes, eyes bright behind his glasses, it is easy to understand why students and collaborators describe him as both rigorous and kind.
Beneath it all is a belief that mathematics is not separate from life but a language that reveals its beauty. The dance of the metronomes, the firing of neurons, the movement of planets, and the laughter shared across a classroom all express a single truth about connection and harmony.
In person, Strogatz radiates calm delight in the act of discovery. The photograph from that afternoon shows him resting on his arms, thoughtful, as the metronomes begin to fall into sync before him. It is a quiet moment that suggests something larger, a glimpse of the universal tendency toward order and the human impulse to understand it.
Bush DAC90a host with Roberts R500 lw/mw/sw chassis.
14/5/14 updated version with Roberts R500 front end (mixer / oscillator AF117 replaced with AF138) feeding a Hacker IF strip from a RP25 and a Hacker audio amp (Rp25 again.)
Now with Hacker silicon FM IF PcB added to underside of Bush chassis fed from a Varicap tuned Larsholt tuner head.
Ditched the bluetooth which although worked was a bit of a phaf linking up to my phone and the quality wasnt what i expected.
The Process of Creating Life: The Nature of Order , Book 2 An Essay of the Art of Building and the Nature of the Universe by Christopher Alexander
This is a very broad bandwidth book, these two pages cover a lot of emergent properties in nature, Alexander has produced a very important series of books, which go well beyond Architecture: A Pattern Language. Here is an image of some other of Alexanders's books
See Allexander Pattern Language website
On these two pages, the discussion covers:
Belousov-Zhabotinsky reaction non-equilibrium thermodynamics, resulting in the establishment of a nonlinear chemical oscillator reaction
Similar vortices on Jupiter
Computer simulation, step-wise evolution of vortices from laminar stream flow.
Evolutionary tree of Hawaiian finches
Sequence of positions in the flight of a pigeon
i061707 007
Explore Jun 17, 2007 #315
The hands of Oliver Chesler, The Horrorist in his recording studio in Berlin, Germany using his Roland SH3 synthesizer.
The Roland SH3 was produced in 1974. It is more rare than the SH3A which was put into the market after Moog sued Roland for the original SH3's filter design. This is one reason the Roland SH3 sounds so incredible. Rumor has it that less than 100 of these were ever made.
You can hear pure Roland SH3 accompanied by an Electrocomp-101 in two songs from The Horrorist: Room of Posers and Sex Machine.
If you enjoyed this video you probably will enjoy this blog:
This came from a cheap dollar store 7 segment LCD display wristwatch I won at an arcade at least 10 years ago. It had an external crystal oscillator, so that should not be located in this chip. From what I remember this watch had two buttons, could display the date as well as have timers.
This was encased in a black goop (similar to calculator chips) which I was able to heat up and remove the chip from. Lighting was done by shining a single LED down the other eyepiece of my microscope in order see more details.
Colour correction was performed in Photoshop because the LED washes out most of the colours.
This chip is around 1mm^2.
Camera: SONY A6000
Number of Images: 12
Panorama Y Axis: 4 Images
Panorama X Axis: 3 Images
ISO: 100
Shutter Speed: 1/25"
Overlap: 50%
Microscope Objective: 10X
Microscope Eyepiece: DSLR Mount
Grid Used: 4x4 (Panning Movement Aid)
Capture Motion: Serpentine
Stitching Software: Microsoft ICE
Stitching Projection Mode: Planar Motion with Skew
Additional Software: Photoshop for colour correction
Image Type: PNG
Image Quality: 100%
This is a photo of Macbeth's first Eurorack module prototype. Two VCOs, ring mod, noise, octave switches, built-in glide on the second VCO and a dedicated knob for crossmod on the first. The module looks very playable and by all accounts should sound like a warm, 70's monosynth oscillator.
Sommerkamp is a "badged" name for Yaesu.
Sommerkamp imported rebranded Yaesu equipment into Europe in the early 1970s, giving them Sommerkamp's own model numbers.
Yaesu called this radio the FRDX-400.
The photo shows the tuned circuit side of the VFO with the cover removed.
The VFO is a two-transistor affair (bipolar oscillator, bipolar emitter follower buffer), which fed a valve (tube) stage before being applied to the second mixer.
The three gangs of the variable capacitor are shared between VFO (4.9 to 5.5MHz) and the tunable IF - the second IF being at 455kHz.
The main fault with this radio is "erratic tuning" - this has been found to be due to poor contact between the moving vanes of the main tuning capacitor and chassis ground. A cure has been to attach an earth braid between one of the grub screws securing the shaft coupler connected to the moving vanes (the white disc) and chassis in such a way as to allow the capacitor to rotate relatively unimpeded.
I tried cleaning and lubricating the suspected faulty area, but wasn't able to affect a permanent cure, so I resorted to the addtional ground connection.
The tuning is now fine and the radio is a "worker"!
When calibrated, this capacitance bridge from 1962 is accurate to 0.01% and can resolve to 1PPM. There is still nothing quite like it; it's the only classic General Radio bridge still in production. It was a gamble buying one on eBay (from an overseas seller, at that!) but because the sealed internal standards and ratio transformers are known to be extremely stable, I thought the chances were good that it would work and have held its calibration pretty well since 2003, the dates printed on the stickers that seal the adjustments panel. Once I cleaned the dirty switch contacts inside, it came to life, and nulls are easy to find. It was missing the desktop handles, but I had a spare pair from a junked 1608-A, and happily they fit perfectly. All good, as the whole thing weighs about 50 pounds. I also found the range extension capacitor (the 10,000pf 1615-P1). It measured 10,001.50pf on the 3-terminal connection. Amazing.
The Faraday cup (on the right) test fixture is necessary for accurate measurements of very small capacitors. Its residual capacitance (lid shut and nothing in the alligator clips) is 0.111pf. I inserted a 1mm-long hair-thin strand of wire into one of the clips, and capacitance went up to 0.112pf. So, that's one way to make a 1 femto-farad capacitor.
This is the Synte 2 processor board. It contains an MC6800 microprocessor, two 2Kbyte EPROM chips, two 128 byte RAM chips and two MC6821 I/O interface chips. The clock frequency of the processor is 1 MHz (the big metal component is a crystal oscillator).
My Zenith 1000D is a very good radio, but I give this Panasonic RF5000A first place because of its extra features. Mainly, its 1.6 to 30 megahertz frequency spread and the built in beat frequency oscillator for listening to single side band radios. OLYMPUS DIGITAL CAMERA
Home-built single tube stereo transmitter for my iPod or sound card.
All solid state except for final RF output stage (a single GE 6550A).
Tuning range: 80MHz to 175MHz in three bands.
Preamplifier modules in the National Ignition Facility contain two different amplification stages. The first is a regenerative amplifier that amplifies the master oscillator room (MOR) pulse energy from about 750 picojoules (trillionths of a joule) to about 15 millijoules (thousandths of a joule), an amplification factor of 20 million. The injected MOR pulses travel through a laser diode-pumped neodymium-doped glass rod 116 times. [More information]
The National Ignition Facility uses 48 preamplifier modules, or PAMs, each of which provides laser energy for four NIF beams. The PAM receives a very low energy (billionth of a joule) pulse from the master oscillator room and amplifies the pulse by a factor of about a million, to a millijoule. It then boosts the pulse once again to a maximum of about ten joules by passing the beam four times through a flashlamp-pumped rod amplifier. [More information]
Nikon F-501/N2020
Integral-motor autofocus 35mm single lens reflex.
Picture Format 24 x 36mm DX coded 35mm (135) film format
Dual autofocus modes (Single servo and Continuous servo) focus assist and manual focusing.
Autofocus Lock Single Servo AF
Focus Assist Available in manual focus mode with an AF Nikkor, Nikkor or Series E lens with a maximum aperture of f:4.5 or faster
Exposure Metering Light intensity feedback measurement (for P DUAL, P HI and A), TTL full aperture centerweighted measurement (for manual exposure) employs one silicone photo diode (SPD).
Metering Range (at ISO 100 with f/1.4 lens) EV 1 to EV19
Exposure Modes Three Programs (dual, normal and high speed) auto exposure modes, Auto, Aperture-Priority Auto and Manual
Shutter Electromagnetically controlled vertical-travel focal-plane shutter
Electromagnetic shutter Release.
Shutter Speeds Stepless from 1/2000 to 1 sec. in P DUAL, P, P HI and A auto exposure modes. Lithium niobate oscillator-controlled speeds from 1/2000 to 1 sec on manual; electromagnetically controlled Bulb setting is provided
Viewfinder Fixed eyelevel pentaprism high-eyepoint type; 0.85X magnification with 50mm lens set at infinity; approx. 92% frame coverage
Focusing Screen Nikon type B clear matte with central focus brackets, 12 mm circle denotes centre weighted metering area; changeable with type E or J focusing screens.
Film Speed Range ISO 25 to 5000 for DX-coded film; ISO 12 to 3200 can be manually set for non-DX coded film.
Motorised film advance, with automatic film loading and rewind
Frame Counter Additive type; counts back while film is being rewound
Self-timer Electronically controlled 10 sec. delay.
Reflex Mirror Automatic, instant-return type
Data Back MF-19.
Flash Synchronization Up to 1/125 sec.
Power source: Nikon AA battery holder MB-3, f4 1.5V AA batteries
Dimensions (W x H x D) 15 x 10 x 5 cm.
Weight (without batteries) Approx. 600g
I invite you to visit my camera site at Classic Cameras in english.
Convido-os a visitar o minha página Câmaras & Cia. em português
I am tempted to put a thin piece of black tape in between them .... but I can't bring myself to deface Don's work ;)
Slightly different circuit, this time tuned to simulate a bongo drum. Uses a single ZTX109 NPN transistor, which is a Ferranti clone of the BC109, but in an E-Line package.
Crews remove the metal casing, piece by piece. Crews will use the same pieces to drill 54 separate bridge shafts for the new interchange in Salmon Creek, and the casing can’t stay in the ground while the concrete sets.
An oscillator steadily lifts the casing out of the ground so when the concrete goes in, the casing comes out. With help from the crane operators, crews detach the casing pieces one at a time and set them aside for cleaning.
Needs your free vote of support at: goo.gl/heBmZ7
With enough votes, it could be made into an actual set by LEGO!
Also, please check out my Minimoog models at: goo.gl/iucWKS
AND
the Prism & Spectrum at: goo.gl/pFTr3v