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The Basics

Dimensions

Guidance

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The History of Electromagnets

The Sticking Power of Electromagnets

Putting the "Electro" in "Electromagnet"

Electromagnets All Around Us

DIY Electromagnets and Experiments to Try

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Precession

The Cause of Precession

Uses of Gyroscopes

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The Cockpit, Brakes and Motor

Oil Pump and Truss Frame

More Parts

The Basics of an Atom

Absorbing Energy

The Laser/Atom Connection

Laser Light

Ruby Lasers

Three-Level Laser

Types of Lasers

What's Your Wavelength?

Laser Classifications

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Other Force/Distance Tradeoffs

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Newton's Gravity

Einstein's Gravity

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A Brief History of Frankincense and Myrrh

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Echo

Doppler Shift

Understanding Radar

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Action and Reaction: The Space Baseball Scenario

Thrust

Solid-fuel Rockets: Fuel Mixture

Solid-fuel Rockets: Channel Configuration

Liquid-propellant Rockets

The Future of Rocket Engines

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Sleep and the Brain

Missing Sleep

Dreams and Improving Sleep Habits

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Photovoltaic Cells: Converting Photons to Electrons

How Silicon Makes a Solar Cell

Anatomy of a Solar Cell

Energy Loss in a Solar Cell

Solar-powering a House

Solving Solar Power Issues

Finishing Your Solar Power Setup

Developments in Solar Cell Technology

Solar Power Costs

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What Your Bathtub Can Teach You About Tornadoes

Tornadoes and Thunderstorms

Tornado Ratings

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How Nature Conservancy Projects are Paid For

How the North Carolina Chapter Works

A North Carolina Preserve

A North Carolina Project

Getting Involved in the Nature Conservancy

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Reality Intrudes

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Electron to Photon: You Don't Excite Me

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Aerial Fireworks

Fireworks Displays

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How Your Eye Focuses

Out of Focus

How a Lens Works

Determining Lens Strength

Lens and Prescription

Overview: How the Lens is Made

Making a Lens: Part 1

Making a Lens: Part 2

Making a Lens: Part 3

Making a Lens: Part 4

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Defining a Hurricane

How a Hurricane Forms

Lifecycle of a Hurricane

Hurricane Categories

Hurricane Damages

Tracking a Hurricane

Hurricane Names

Hurricane History

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The "Nuclear" in "Nuclear Radiation"

Radioactive Decay

A "Natural" Danger

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How Carbon-14 is Made

Dating a Fossil

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Atomic Structure and Radioactivity

Nuclear Fission

Nuclear Fuel

Fission Bomb Design

Fission Bomb Triggers

Fusion Bombs

Nuclear Bomb Delivery

Consequences and Health Risks of Nuclear Bombs

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The Endolymph

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Space Elevator Ribbon

Riding a Space Elevator to the Top

Space Elevator Maintenance

Space Elevator Impact

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Solar Sail Concept

Solar Sail Materials

Solar Sail Launch

Future Space Travel

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The Parts of the Sun

The Sun's Interior: Core

The Sun's Interior: Radiative and Convective Zones

The Sun's Atmosphere

The Sun's Features: Sunspots, Solar Prominences and Solar Flares

The Fate of the Sun

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Positron Emission Tomography (PET)

SPECT, Cardiovascular Imaging and Bone Scanning

Treatment in Nuclear Medicine

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Just Breathe

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Teleportation: Recent Experiments

Human Teleportation

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Electrical Efficiency

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Types of Punkin Chunkin Machines

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NASA's X-Fleet

Replacing the Space Shuttle

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Mars History

The Origins of Mars

The Surface of Mars

The Interior of Mars

The Atmosphere of Mars

Water on Mars

Life on Mars?

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Valuable Asteroid Resources

Asteroid Extraction and Processing

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Putting Gears to Work

Understanding the Concept of Gear Ratio

Gear Trains

Other Uses for Gears

An Example

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Commercial Space Travel

Space Accommodations

Who Gets To Go?

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Carnivorous Evolution

Packet Sniffing

The Carnivore Process

Prey of the Carnivore

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What is Antimatter?

Matter-Antimatter Engine

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Characteristics of Mistletoe

Mistletoe Myths

Kissing Under the Berries

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Qualifications for Becoming an Astronaut

Astronaut Candidate Selection

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Methanol Digestion and Dangers

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The CL 160 Structure

Hangar

Loading Frame

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What Is Alcohol?

How Alcohol Enters the Body

How Alcohol Leaves the Body

Blood Alcohol Concentration

How the Body Responds to Alcohol

Alcohol and the Brain

Alcohol and Other Bodily Functions

Alcohol Abuse

Long-term Effects of Drinking

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How fast does a waterjet cut?

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Making Crayon Labels

Crayola Marker Manufacturing

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The History of Human Augmentation

Morphing Man and Machine

Challenges of Development

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Laser-propelled Lightcraft

Microwave-propelled Lightcraft

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Hovercraft Basics

The Airboard

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Common Yawning Theories

Contagious Yawning

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Asteroid Classification

Project NEAR

NEAR Lands on Eros

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Rising Balloons

Piloting a Balloon

Launching and Landing

Wind and Weather

Air: A High-pressure Fluid

Air Pressure + Gravity = Buoyancy

Ballooning History

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The Basics

Human Testing

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Encountering Microgravity

How You Feel in Microgravity

Countermeasures

How You Sense Position and Motion

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Spaceship, Heal Thyself

Living Wires

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Fruit of the Vine

Viticulture

Get Your Feet Wet

Sell No Wine Before Its Time

Storage

Cork in the Bottle

Champagne

Home Winemaking

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Snakebot Anatomy

Slithering On Other Worlds

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Fly Like a Bird, Hover Like a Bee

Inside the Osprey

How the Osprey Flies

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Search the Skies

Contact

SETI and You

The Future of SETI

Dishes for the Sky

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Planet Hunting Techniques and Technology

Kepler's Search for Exoplanets

Planet Hunting Milestones: From Handfuls to Hundreds

Planet Hunting Milestones: Kepler, Corot and the First Thousand

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Greetings, Carbon-based Bipeds!

What Is Life?

Life in the Extreme

Some Ground Rules for Alien life

Speculation: What Might Aliens Be Like?

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Learning to Fly

Robobugs Prepare for Flight

Micromechanical Flying Insect

Fly on the Wall

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Why Hybrid? Why Diesel?

Steel Wheels

Traction

The Layout: Main Engine and Generator

The Layout: Cab and Trucks

The Layout: Power, Fuel and Batteries

The Engine and Generator

The Trucks: Propulsion & Suspension

The Trucks: Braking

Driving a Locomotive

Riding the Train

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Hiding in Plain Sight

Disguise and Decoy

Harder to Hide

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Fuel Loads

Weather's Role in Wildfires

Fire on the Mountain

Battling the Blaze

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The Whole (Dew) Point of the Matter

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Water, Water Everywhere

Under the Weather

Take Me to the River

Come Hell or High Water

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Barrier-island Zones

Barrier-island Habitats

Nature's Effects on Barrier Islands

Fighting Erosion on Barrier Islands

Development's Effects on Barrier Islands

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Types of Airports: Small, Regional and Ridiculously Big

Wanted Since the 1950s: Airport Sites

Airport Runways: Entering and Exiting the Friendly Skies

At the Hub of It All: Concourses and Terminals

Loading and Unloading Aircraft

Airport Safety and Security

Ground Transportation: Plane Train? Shuttle? Rental Car?

Airport Management

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Flight Profile and Preflight

Departure, En Route and Descent

Approach and Landing

Careers and Concerns

Air Traffic Control Problems

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Black Boxes Begin

Cockpit Voice Recorders

Flight Data Recorders

Built to Survive

Testing a Crash Survivable Memory Unit

After a Crash

Retrieving Information

The Future of Black Boxes

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Landmine Basics

Anti-personnel Mines

The M14 and M16 Anti-personnel Mines

Anti-tank Mines

Locating Mines

Mine Clearing Machines

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Detonators and Dynamite

The Big Bang

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Take a Seat

Bailing Out

Physics of Ejecting

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Jolting Into Space

Beyond Our Solar System

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Creating a New Look

Flying at Near-Supersonic Speeds

Almost Anywhere Non-stop

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Will TV ever be the same?

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A Hydraulic-driven Heart

The Seven-hour Surgery

The Sickest of the Sick

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Why Rip Currents Form

Escaping a Rip Current

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What's Quicksand?

How to Escape

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Making Waves

Man-made Waves

Just Add Water

A Giant Super-clean Toilet

Let it All Out

Oil and Water

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The Early Years

Education and Early Work

His Writings

Accuracy

Skeptical Interpretation

September 11, 2001

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Ballistic Background: Barrel

The First Guns

Revolvers

Machine Guns and Gun Systems

Machine Gun Recoil Systems

Machine Gun Blowback Systems

Machine Gun Gas Systems

Machine Gun Feeding: Spring and Hopper System

Machine Gun Feeding: Belt System

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Feel the Burn

Fight Fire With Fire

Handheld Flamethrowers

Tank-mounted Flamethrowers

Civilians With Fire

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Early Vampires: Lamastu and Lilith

Early Greek and Asian Vampires

Later Vampires

Modern Vampires

Origins of Belief

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Characteristics and Origins

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The Chemical Reaction

The Activator

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Meteors

The Leonid Shower

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Segway Parts

Segway vs. Cars

Segway Specs

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Pictures in an Instant

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The Basics

Launching the Missile

Stinger Stats

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The Basic Idea

Scanning Procedure