Technical Notes
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Astronomy | General | Lab Technique

topAstronomy
 

AAVSO Historical Light Curves

AAVSO Membership Information

AAVSO Observing Programs

AAVSO Publications and Periodicals

AAVSO: Services to Astronomy

Astrology

The Art of Using a Telescope

A Basic Primer on Setting Up an Amateur Radio Telescope

Beating the Seeing

Binoculars: Halfway to a Telescope

A Biologist's View of Life Out There

Caring for Optics

Celebrated Variable Stars

Choosing Binoculars for Astronomy

Choosing Your First Telescope

The Chronometric Method for Measuring Double & Multiple Stars

Dealing With Dew

The Devil's in the Magnitudes

A Guide to Backyard Astronomy

Hands-On Astrophysics Interpolation Activity

Hands-On Astrophysics Activity; Observing Delta Cephei

How to Start Right in Astronomy

Keeping Warm at the Telescope

Latitude is Everything

Making Variable Star Observations

Names of Deep-Sky Objects

Names of the Stars

Power and Aperture in Binoculars

A Secret Weapon Revealed: The Role of Amateur-Professional Collaborations in Astronomy Research

Setting Up an Observing Program

Spectral Types of Stars

Star-Finding With a Planisphere

Stargazing Secrets of Kitt Peak

Ten Secrets of Lunar and Planetary Observing

The Stellar Magnitude System

Time and the Amateur Astronomer

Understanding Celestial Coordinates

The Unspeakable Act of Creation (or What the Cosmologist Saw)

Using a Map at the Telescope

Using a Naked-Eye Starmap

Using the Hands-On Astrophysics Manual

Variable Stars Explained

What to do in a Big Lecture Class, Besides Lecture

topGeneral
 

Age of the Earth

Algorithms for Mental Conversions between the Fahrenheit and Celsius Scales

Amateur Science--Strong Tradition, Bright Future

An Impoverished Amateur's Library

Analysis of Variance

An Aspirator Vacuum Station

Blowing Soap Bubbles in Sub-Zero Weather

Breadboard Basics

Build the Variable Power Supply

Can You Dig It?

Circuit Debugging Tools

Collection and Preservation of Algae

Constantly Counting Creatures

Construction of Prototype Circuits

DNA Fingerprinting

Document Your Results and Share

Fields of Gravitation

First Aid for Electrical Accidents

A Formula for Homemade Botany Paste

Fossils and Rocks

Fossil Succession

Further Reading on Fossils

Geologic Time

Getting Information About Chemicals

A Glossary of Seismic Terms

A Great Source of Free Chemicals

Hardware Hunting

How to Obtain Aerial Photographs

How to Win a Science Fair

Index Fossils

An Inexpensive Aspirator

The Interior of the Earth

Introduction to Fossils

Introduction to Object-Oriented Software

Introduction to Partial Differential Equations

King of the Amateurs

Major Divisions of Geologic Time

Make Your Own Carbon Rods with Sucrose and Sulfuric Acid

Make Your Own Sodium

Meet Your New Research Assistant: Uncle Sam!

Monitoring Earthquakes Across the US

The Myth of Amateur Science

A Naturalist's Notebook

Numeric Time Scale

Optical Instruments

Platinum Thermometer

The "Plumber's Special" Sorption Pump

The Plundered Past

Putting Events in Order

Ready References

Radiometric Time Scale

Relative Time Scale

Researching Electronics Information on the Web

Rocks and Layers

Rules for Unconventional Research

Safe Source of High Current

Solubility and Drying Agents

Some Ideas for Getting Involved

The Severity of an Earthquake

A Simple "SONAR" Demo

Starting a Rock Collection

Stepper Servo Motors

Testing a Seismograph Amplifier

Taking the Earth's Pulse

Volunteer Stream Monitoring: A Methods Manual

What are Significant Figures?

When Dumpster Diving Isn't Enough

topLab Technique
 

Basics of Motion Control

Cleaning Laboratory Glassware

Coating of Surfaces: Evaporation and Sputtering

Control Instrument Applications

Determining the Amount of Reagent Needed for Solution Preparation

Easy Prototyping

Electrometers and Electroscopes

Essential Technologies for Making Accurate PC-Based Measurements

General Procedures for Filtration of a Precipitate

Glass Blowing for the Laboratory

Heat and High Temperature

Home-made Distilling Apparatus

Laboratory animal guidelines

Laboratory Optical Work

Managing Mercury

Measuring Acidity and Alkalinity

Measuring the Volume of a Liquid with a Pipet

Molding and Casting

Notes on the Construction and Design of Instruments and Apparatus

Notes on the Materials of Research

Overview of LabView

Overview of Motion Control

A Poor Person's Frequency Measurement

Preparation of Solutions, Part 1

Preparation of Solutions, Part 2

Preserving Biological Specimens

Preventing and Handling Chemical Accidents

Signal Conditioning and Data Acquisition Overview

Signal Conditioning and Data Acquisition Basics

Signal Generators and Their Uses

A Simple Pipette and a Vacuum Filter

Substitutes for Bunsen Burners

Technique of High Vacuum

Techniques in Microbiology

The Use of Fused Silica

Vacuum Thermopiles and the Measurement of Radiant Energy