Updated 29 January 2020

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This page is a curated selection of links reflecting my scientific and recreational interests. I ignore almost all requests for adding links.

My Site Links page has nearly all of the links from all of my web pages.


Bike Shops, Parts and Brands

AvantiPlus NZ
Bike Barn
Burkes Cycles Online - Wellingtons home of bikes and bicycle accessories
Capital Cycles, bike shop wellington: road bikes, mountain bikes
Cycle Science
Bike Finder - Giant Bicycles | New Zealand
Jamis Bicycles - Road Bikes, Mountain Bikes, Street Bikes, Sport Comfort Bikes, Cruiser Bicycles, Kids Bikes
Jville Cycles
Lugged Steel Bicycles, Wool Clothing, Leather Saddles and Canvas Bike Bags from Rivendell Bicycle Works
Topeak® Cycling Accessories — Products - Explorer Tubular Rack (w/ Spring)
Radical Design - Bicycle trailers

Bike Reviews and Blogs

Alastair´s Blog
Answering All of Your Bike-Related Questions
The Bike Show from Resonance FM
Bicycle Design - The blog about industrial design in the bike industry
crazyguyonabike: Bicycle Touring: A place for bicycle tourists and their journals
The Everyday Cyclist
Bike blog | Environment | The Guardian
Bike Snob NYC
The Blayleys
Bikes For The Rest Of Us
Dizzy's folding bike blog
Dom's Plan B Blog | Urbanism, Smart Growth, Town Planning
Hands On Bike
Jamis Allegro Sport
Jim Langley — Bicycle Aficionado
Kennett Brothers - books about bike riding in New Zealand
Kent's Bike Blog
Kiwi Brevet 2015: Rider profiles 2012
London Cyclist
Lovely Bicycle!: Bicycles for Everyday
Off The Beaten Path | News from Bicycle Quarterly and Compass Bicycles
The Path Less Pedaled
A view from the cycle path

Bike Magazines

Bicycling Magazine
Workshop: Top 10 Bike Maintenance ‘Don’ts’ - BikeRadar
Gran Fondo Cycling Magazine

Bike Advice and Advocacy

Bicycle Technical Information - Sheldon Brown
Bike Articles - Myra VanInwegen
Bike Fit - Jim Langley
Bike Safety - Jim Langley / Buyer's Guide / Hardness Testing
Cycling - NZ Transport Agency
Cycle Aware Wellington
Cycle Tour New Zealand - What to Take
Cycling in Wellington
How to lock your bike (properly!)
An interactive, model-based calculator of cycling power vs. speed
Locking Your Bike and Getting it Back - Jim Langley
Lock Strategy - Sheldon Brown and John Allen
MadeGood.bikes - Free bike repair videos and tutorials
Six Basic Biking Skills - Jim Langley
The Beginner's Guide to Essential Bike Maintenance

Folding Bike Blogs

Aussie on a Brompton
Brompton Folding Bike + Trailer: A Perfect Touring Combination? - TravellingTwo: Bicycle Touring Around The World
Bike Friday Blog
Downtube Byclcle Blog
Dizzy's folding bike blog
Folding bike travels
Montague Bikes - Folding Bikes Blog
My Orange Brompton
Zen and the Art of Brompton Touring @ The Path Less Pedaled

Folding Bike Reviews

Best Folding Bikes
Bickerton Portable folding bike
Giant Expressway 2 Folding Bike
Tern Link P24h Long-Term Review and Photos

Folding Bike Shops, Parts and Brands

Bike Friday
Brompton Bicycle | Folding bikes, folding bicycles from Brompton Bicycle
Bicycle Junction - Brompton Bicycles in New Zealand
Citizen Folding Bikes
DAHON Bikes: Folding Bicycles and Folding Bike Accessories.
Electric and Folding Bikes Northwest: Folders
Tern Folding Bike and Folding Bicycle Accessories | Australia

EBike Blogs

Bicycle Junction Blog
Cycling and hiking adventures & detours
Dizzy's folding bike blog blog
The Prospectory - e-Bike Theory

EBike Reviews

Electric Bike Report | Electric Bike, Ebikes, Electric Bicycles, E Bike, Reviews
Electric Bike Reviews -
SmartMotion e20 Folding Electric Bike
NZ Electric Bike Review – Which is the best ebike for me?
SmartMotion eMetro Electric Bike
SmartMotion Vista Electric Bike

EBike Forums

Pedelecs l UK Electric Bikes • Index page

EBike Shops, Parts and Brands

ARCC Assist e-bike system
Bicycle Junction
BAFANG EBike components
LiFePO4, EV Charger, EBike Battery, Bike Conversion Kit, Motor, Controller - BMSBATTERY
Solarbike - Electric Bikes
Electric Bikes, Scooters and other Light Electric Vehicles (LEV)
Grin News
Bigstone - LCD Displays
Lekkie Bikes - Upgrade Your Ride
SmartMotion Bikes
Switched On Bikes
Wellington Electric Bikes

EBike Advice

2-speed hub motors, E-matic and Xiongda
A to B magazine - Electric bikes, folding bikes, e-scooters and more!
Bicycle Speed And Power Calculator
Slowcycles - E-Bikes
eBike range calculator for Bosch drive systems – Bosch eBike - Bosch eBike Systems
e-Bike Theory | The Prospectory
The Health Benefits of an Electric Bike
Slowcycles - Install guide
Grin Technologies - Motor Simulator

New Zealand Bike Rides and Trails

‎AATravel Alps2Ocean-Cycle-Trail
Christchurch official visitor guide
Clutha Gold Trail
crazyguyonabike: Bicycle Touring: A place for bicycle tourists and their journals
Mount John Observatory Tekapo
Hawke's Bay cycle trails
Hyde Otago Rail Trail Accommodation
Kennett Brothers Limited
Otago Central Rail Trail Official Website
Otago Rail Trail
Mackenzie Country Tekapo Canals Alps to Ocean Cycle Trail 5 day bike tour
Tasman's Great Taste Trail
Trail Journeys - Otago Central Rail Trail, Roxburgh Gorge and Clutha Gold Trails
NZ Topo Map - New Zealand Topographic Map
Ultralight bicycle touring
Wellington Region Cycleways
Wellington Cycling - New Zealand
Mountain biking in Wellington » WellingtonNZ


Christchurch Ashleigh Court Motel
Blacks Hotel - Ophir
Arrowtown Pittaway's Cottage - Garden Studio
Lake Ohau Lodge
Clyde's Plum Tree Cottage
Wedderburn Cottages - Otago Rail Trail

Overseas Bike Rides Bicycle Touring: A place for bicycle tourists and their journals
Eurovelo 6 and the Loire à Vélo
Tom Allen’s Bike Trip
Individual bike tours in Holland
Ultralight bicycle touring


Careers and Small Business

Careerjet employment search engine
Careers Services
Student Job Search

Free Program Downloads

Audacity - The Free, Cross-Platform Sound Editor
Balthisar Tidy - HTML cleanup for Mac
DOSBOX - runs DOS programs under Windows, Linux and OSX
Fiji - ImageJ together with Java, Java 3D and a lot of plugins
hp15C Simulator
ImageJ - Image processing and analysis in Java - PC, Mac or Linux
Irfanview - Image viewer and editor - PC
LibreOffice free office suite - PC, Mac or Linux
Mozilla Firefox - Web browser - PC, Mac or Linux
Mozilla Thunderbird - Email application - PC, Mac or Linux
NeoOffice - Mac OS X office software
NIST Surface and Microanalysis Division Software
Mozilla NVU - Web authoring system - PC, Mac or Linux
OpenOffice free office suite - PC, Mac or Linux
NIH Image - Image processing and analysis for Mac
Smultron - a reliable Mac text editor
Stellarium is a free open source planetarium - PC, Mac or Linux


Arts and Letters Daily - ideas, criticism, debate
Bike Snob NYC
Lovely Bicycle!: Bicycles for Everyday
New Zealand Weather Forecasts
Niwa Weather for Wellington NZ
NZ Herald: New Zealand's Latest News
The Online Photographer
SciTech Daily Review -- Something Amazing Every Day
Space News From SpaceDaily.Com
Strathspey Server - Stuff
The Dominion Post - Wellington News
Universe Today
W3C Markup Validator
W3C Link Checker
Wellington |
Weather Underground


The Atlantic — News and analysis on politics, business, culture, technology, national, international, and life –
BBC News - Home
Brain Pickings
Freeview - TV Guide for Freeview Channels
Google News
The Guardian - Latest news, comment and reviews
Huffington Post
The Listener - New Zealand Radio Frequencies
Mail Online
NPR Home
NZ Herald: New Zealand's Latest News
otago daily times
Radio New Zealand News Headlines
Reuters - Business and Financial News, Breaking US and International News
Scoop - New Zealand News
Stuff - New Zealand, world, sport, business and entertainment news
Stuff - The Dominion Post: local, national and world news from Wellington's daily newspaper
Stuff - Taranaki Daily News - Taranaki News - |
Stuff - The Press - Christchurch and South Island News -
Sydney Morning Herald - Business and World News Australia
Television New Zealand | News, Sport, Weather, TV ONE, TV2
TV3 - Home


Excel 2013 Tutorial
HTML Tutorial
The Micrographia Tutorials


Electron Microscopy

ANL Microscopy and Microanalysis WWW Server
Edu Sites for Microscopy and Microanalysis
A Ceramics and Photographic Exhibition - Electron Micrographs
EPMA-8050G Electron Probe Microanalyzer : SHIMADZU (Shimadzu Corporation)
Caltech GPS Analytical Facility
JEOL 733 Electron Microprobe
JEOL 733 Electron Microprobe Repair
Microbeam Analysis Society Homepage
MIT Electron Microprobe Facility
NCEG - Electron Microprobe
Northern Arizona University's Electron Microprobe Laboratory
NIST Surface and Microanalysis Division
University of Hawaii Electron Microprobe Laboratory
University of New South Wales EM unit
University of Oregon Microanalytical Facility
University of Wisconsin Electron Microprobe lab
Quantitative Electron Probe Microanalysis (EPMA): Doing It Right and Doing It Wrong!

Visible Light Microscopy

ADIAC Diatom Image Database
Biomedical Imaging Research Unit
Fiji - ImageJ together with Java, Java 3D and a lot of plugins
Getting the Best Out of a Basic Microscope
Historical Microscopes
ImageJ - Image processing and analysis in Java - PC, Mac or Linux
Making Digital Camera Microscope Adapters
McCrone Research Institute - Microscopy Magazine and Blog
Microscope - Microscopes For Every Application - Microscope World
Microscopy New Zealand
Microworld Resources and News
Microscopy and Mineral Images
Microscopy Society of America
Microscopy Resource Center
Modern Microscopy Journal
Molecular Expressions
NIH Image Home Page
Pippa's Progress
Practical Microscopy
The Quekett Microscopical Club
Royal Microscopical Society
Teaching Microscopy to Young Children
Visible Light Microscopy
WWW Virtual Library of Microscopy


Close-up Photography

Cell Phone Macro Photography
Inexpensive Macro Photography
Insect Macro Photography
Lambert Smith's Insecta
Mounting Digicams With Zoom Lenses Over The Microscope

Digital Darkroom

Black And White Digital Printing
Diffraction Limited Photography: Pixel Size, Aperture and Airy Disks
Depth of Field Table
LCD monitor test images
Understanding image sharpness:
Vivid Light Photography
Wilhelm Imaging Research

Film Photography and Cameras

Antique and Classic Cameras
Black and White World: A Celebration of Photography
Bojidar Dimitrov's Pentax K-Mount Equipment Page
Classic Camera Collection.
Dante Stella
My approach | Photography and image capture: the Leica technique and philosophy by Erwin Puts | Erwin Puts
nemeng Leica FAQ - main index home page - a resource for photoethnographers
Yashica Electro 35 and Rangefinder camera user Homepage

General Photography

Camera reviews, DSLR reviews, lens reviews, photography guides | Cameralabs
Digital Photography Resource Guide
Digital Photography Review: Forums, Glossary, FAQ
The Imaging Resource!
Ken Rockwell's Updates
Lensrentals Blog
LIFE photo archive hosted by Google
Lomography Konstruktor step-by-step build | thehobbyshop
The Luminous Landscape
Make Your Own Camera: Konstrukting a Lomography Konstruktor
The Online Photographer
Optical Illusions and Visual Phenomena
Pentax K-Mount Lenses and Lens Accessories
PhotographyBLOG -:- Home Home Page and Recent Digital Camera Reviews
Photos and Stuff Portal - Rangefinderforum
Steve Huff Photos - Real World Digital Camera And Lens Reviews
Steve's Digicams - Breaking News - Current
The Visual Science Lab
Welcome to Photozone!

Photographic Supplies

LensMate G1/G2/G3/G5/A80 Accessories
Mainline Photographics
PENTAX Products : Digital Cameras
Photo and Video International - New and Used Photographic Equipment
Photo Warehouse ::: photography, cameras, accessories and other photographic products
Wellington Photographic Supplies

Video Tools

$14 Camera Stabilizer
Balvanz Enterprises: DIY Camera Stabilizer Build - The Stabilizer Base Plate
Balancing the Rhino Steady Camera Stabilizer
The Detonation Films Camera Stabilizer
eiraSYS Products 2013 - iPhone 5 Stabilizer
THE PICOSTEADY - Video Camera Stabilizer
Stabilizer for a Canon G15 camera
Restoring 8mm Home Movies
Welkom op de smalfilm-pagina's van Fred Internet


General Science

Arts and Letters Daily - ideas, criticism, debate
CERN - the European Organization for Nuclear Research
The Economist
Khan Academy
MetVUW Weather and Climate Service
The Naked Scientists Online, Science Podcast and Science Radio Show
Nature Publishing Group : science journals, jobs, and information
The New York Times Science
Popular Science
Science/AAAS | Scientific research, news and career information
Science News
SciTech Daily Review
Technology Review: The Authority on the Future of Technology
Top 11 Trusted (And Free) Search Engines For Scientific and Academic Research
Wolfram Alpha Computational Knowledge Engine


Amethyst Galleries Mineral Gallery
Atlas of Igneous and Metamorphic Rocks, Minerals and Textures
Petroglyph Home Page
Mars Exploration Rover
Mars Pathfinder - Welcome to Mars!
Minerals and Rocks Under the Microscope
Mineralogy Database
Virtual Atlas of Opaque and Ore Minerals in their Associations
Practical Aspects of Mineral Thermobarometry
X-ray powder diffraction

Science Topics

Acoustic neuroma – Radiotherapy as a treatment option
AIST:RIO-DB Spectral Database for Organic Compounds,SDBS
Annotated Web Links « Chemistry | Allegheny College - Meadville, PA
The Analytical Chemistry Springboard - Mass Spectrometry Links and Resources
Atomic and Nuclear Properties of Materials for more than 300 substances
Bioresource Processing | Creating Economic Growth by Harnessing Hidden Value
A Black Flame
Cavity Resonance
Digital Einstein Papers Home
The effect of the film can
The educational encyclopedia
Fermilab | Home
The Feynman Lectures on Physics, Volume I Table of Contents
The Feynman Lectures on Physics, Volume II Table of Contents
The Feynman Lectures on Physics, Volume III Table of Contents
HP Gas Chromatograph
GE Healthcare-Training - Education: X-ray Dose - X-ray dose concept and reduction measures
Henry Barwood - A mini-XRF unit designed for mineral grain analysis
Kuiper Airborne Observatory
Sandatlas - List of the Rock-Forming Minerals
Mic-UK [site A]: Oamaru Diatoms
NIOSH Manual of Analytical Methods
NIOSH Pocket Guide to Chemical Hazards
NIST - SRM Order Request System
Optical Cathodoluminescence (Optical CL)
Paint failure diagnosis: how to use paint cross section cuts
Periodic Table of the Elements by WebElements
Phet - Isotopes and Atomic Mass
Mercury Photoacoustic Effect
Pictures, stories, and facts about the element Titanium in the Periodic Table
RADIOCHEMISTRY SOCIETY - Specialized Courses in Radiochemistry
Scott Base - Ross Island - Antarctica
Search Diatom Image Database
Sheet Materials for Use as Membranes in Membrane Introduction Mass Spectrometry
Spectral Database for Organic Compounds SDBS
Smarthistory: a multimedia web-book about art and art history
Spectra of Gas Discharges

Science Podcasts and iTunes U

60-Second Science
Astronomy Cast
iTunes U
The Naked Scientists
Nature Podcast
Science Friday
Science Podcast
Scientific American Podcasts
WNYC Radiolab

Science - Commercial

Amptek X-ray spectrometers
Coherent Scientific
Duniway Stockroom Corp - Vacuum equipment
Dycor Mass Spectrometers
GBC Scientific Equipment
Geller MicroÅnalytical Laboratory
Jaycar Electronics
JEOL Electron Microscopes
Microscopy Vendors Database
microimaging - Meiji microscopes
Mocon profiler repair
Moran Scientific Home Page
Moxtek - X-ray products
millenium science - AMG digital microscopes
Olympus - Olympus microscopes
Oxford Instruments' Home Page
Malvern Panalytical
Pfeiffer Vacuum Home Page
Pico Technology Limited - Data capture
ProSciTech - microscopy supplies
SPI Supplies - Structure Probe Inc. - microscopy supplies
Zeiss microscopes


Chandra X-ray Observatory - NASA's flagship X-ray telescope
Cassini-Huygens Home
CICLOPS - Official Source of Cassini images of Saturn, its rings and moons
Dawn - Ceres and Vesta | NASA
Cosmic Ray Telescope
ESA Science and Technology: Herschel
ESA - Planck
Indian Space Research Organisation
Juno | NASA
KAO 30th anniversary
Gerard P Kuiper Airborne Observatory
Kuiper Airborne Observatory - about the KAO
Lunar Lander
Mars Exploration Rover Mission: Home
Midnight Planets - Curiosity Mars Exploration Rover Images
NASA's Kuiper Airborne Observatory, 1971-1995
NASA - Mars Science Laboratory, the Next Mars Rover
New Horizons
The Project Apollo Archive
Rocket Lab
Saturn V
Sofia - Live from the Stratosphere
Rosetta - ESA Science & Technology -- Something Amazing Every Day
Space News From SpaceDaily.Com
Universe Today


Mass Spectrometry

Base Peak Mass Spectrometry page
Dycor Mass Spectrometer
How a Quadrupole Works
Mass Spectrometry Links and Resources
Mass Spectrometry: Quadrupole Mass Filter
Mass Spectrometry Fundamentals – Theory
Quadrupole Mass Filter

X-ray Spectrometry

Amptek X-ray Spectrometer
Amptek X-ray spectrometers
Amptek X-ray chart
Software for XRF



Ars Technica
Actrix - Broadband, VDSL and Naked Broadband - The best little NZ ISP
Broadband Internet Access Service Providers NZ, Wired and Wireless Broadband Plans Companies Deals and Reviews New Zealand
Curve fitting - Linux Announcements
Eddie's Math and Calculator Blog
Free42, an HP-42S calculator simulator
How to Convert Vinyl Records to MP3 or AAC: A Step-by-Step Guide
HP-15C Simulator: Online Help
HP-15 Simulation
Internet Archive - Wayback Machine
The Museum of HP Calculators
NanoWasp - A MicroBee Emulator
PB Tech - Computer Parts, PC Components, Laptop Computers, LCD Monitors, Tablets and more!
Quadratic Equation Solver
The Register: Sci/Tech News for the World
Sentence case v title case>
Slashdot: News for nerds, stuff that matters
SwissMicros DM15 Scientific Calculator
Transcription Resources. Software to slow down music.
W3C Markup Validation Service
W3C Link Checker
Wired News


About Electronic Transducers
Apple and other USB charger secrets
Arduino - HomePage
Circuit Simulator Applet
Dave's Homemade Crystal and Tube Radios at
EEWeb Electrical Engineering Community
Electronics - Wikibooks, collection of open-content textbooks
Electronic Toolbox - RF-Toolbox
element14 New Zealand | Formerly Farnell | Electronic Components Distributor
Electronic Valve and Tube Company
Emona Ltd - Oscilloscopes, DC Power Supplies, Function Generators, Spectrum Analysers, Calibrators, Multimeters
The Frantone Electronics Homepage
Free Electronics resouces: schematics, tutorials, datasheets, radios, tesla coils, FPGAs, microprocessors - Freebytes Guide to
Freetronics - Parts and Kits for Arduino Online, Buy Microcontroller Boards, Electronic Components for Arduino
Fuel Cell Store
Homebrew RF Test Equipment and Software
IEEE Spectrum
Jaycar Electronics
Microcontrollers, Analog, RF, and all three mixed.
MindKits Offer a range of robot / robotic kits and parts from Arduino Uno, RFID readers, breadboards, LCD parts and more
Precision Amplifier Wiki
Raspberry Pi
Ripples in the Ether | Emanations from Amateur Radio Station NT7S
RS New Zealand | World Leading Distributor of Electronics, Electromechanical and Industrial Components
Talking Electronics Index for website
Techmoan - Techmoan
The Signal Path - An electrical engineering video blog for students, hobbyists and hackers.

Investment Casting

CO2 Meter - pSense Portable CO2 Meter - Portable product by AZ-Instruments
Bot Pots
Furnace Engineering
Guide to Good Investment Casting Techniques
Hitchiner Manufacturing Co., Inc.
The Ceramic Shop
Investment Casting 101 Photo Gallery by Mike Callihan at
Investment powders
Pottery Front-Loading and Top-Loading Kilns
SRS - Investment Powder, Injection Waxes for Jewellery and Foundry Lost Wax Casting
Stone in Place Casting - Gold Star Powders
What do the Markings and Stamps inside your ring mean?


GadgetBuilder's MiniLathe Site
Manufacturing Process home page
The SBL Workshop - Home
The Taig Lathe and Milling Machine

Plasma Ashing

EMS1050X Plasma Asher
JEP - Plasma Asher
SPI Plasma-Prep III Plasma Etcher, Cleaner and Asher
Thierry Plasma Asher

Vacuum Techniques

Fundamentals of Vacuum Technology
Modern Vacuum Practice
Vacuum Techniques


Email: replace at with @


Dycor Mass Spectrometer

Visible Light Microscopy

Plasma Asher

SwissMicros DM15 Scientific Calculator

hp15c Program Index

Curve Fitting


Recent Photos

Hesperus the Pack-Cow

Favourite Photos

A Ceramics and Photographic Exhibition

Kuiper Airborne Observatory



A Black Flame


Dizzy's Folding Bike Blog

Bike Reviews

Giant Expressway 2 Folding Bike

SmartMotion e20 Folding Electric Bike

SmartMotion eMetro Electric Bike

SmartMotion Vista Folding Electric Bike

Jamis Allegro Sport Fitness Bike

Bickerton Portable Folding Bike

Electron Microprobe

JEOL 733 Electron Microprobe

JEOL 733 Electron Microprobe Repair

Oxide Conversion Table

Completed projects

Amptek X-ray Spectrometer

Mercury Photoacoustic Effect

HP Gas Chromatograph

Camera Stabilizer

Mocon Profiler Repair


Site Links

Related Links

EEVblog Electronics Engineering Video Blog

The Online Photographer


Lovely Bicycle

Bike Snob NYC

Pedelecs Electric Bike Community


Arts & Letters Daily

Universe Today

The name of this site adds the initials of my name, John E Patterson, to "spectro", from spectroscopy. The logo above is a stylised "JEP" with overlapping letters. The colours represent spectroscopy.