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Engineering Archives, Since November 1991


Table of Contents:
  1. Strongest geometric figure
  2. Geometric figures - bridges
  3. High school preparation for engineering
  4. Engineering fields and mathematics
  5. Future of mechanical engineering
  6. Absorbing energy in a crash
  7. Braking force of automobiles
  8. US fast-breeder policy
  9. Fusion energy to power
  10. Electricity generation
  11. Photovoltaic motors
  12. Variable speed motor
  13. Space plane
  14. Building on the moon
  15. Why does the Shuttle turn on launch?
  16. Gyroscopes
  17. Triangulation
  18. Magnets in speakers
  19. Speaker impedance
  20. Permanent magnet manufacture
  21. E/M interference
  22. FM modulation
  23. Pressure rise in pipe expansion
  24. Drag coefficient and Reynolds' Number
  25. Boundary layers
  26. Cavitation
  27. Is it more efficient to turn off fluorescent
  28. Uninterruptable power supply
  29. Electrical current
  30. Refrigerators
  31. Golden Gate Bridge
  32. Pinhole in thin metal foil
  33. Properties of steel
  34. Boundary layers and airplanes
  35. Airfoil resources
  36. Minimum wing length
  37. Placement of airplane wings
  38. Aerodynamics and saucers
  39. Flight navigation
  40. Maximum altitude of airplanes
  41. Airplane crashes
  42. NACA scoops
  43. Launching spacecraft
  44. Plexiglass box vacuum; Coasting in Space
  45. The fastest spacecraft
  46. Spacecraft reentry to Earth
  47. Hardness of a golf ball versus flight
  48. Converting fusion energy to electric power
  49. Support beam geometry
  50. Structural analysis - materials
  51. Building sway
  52. Earthquake engineering
  53. Weight-bearing structures
  54. Toothpick-bridge building
  55. Floating bridges
  56. Building construction on the Moon
  57. Causes of potholes
  58. Building a person-carrying kite
  59. Hydroelectric power
  60. Cost of energy
  61. Mining natural resources
  62. Sensory deprivation
  63. Egg breakability
  64. Washing machines: top versus side loaders
  65. Greatest of the Seven Wonders of the World
  66. Gyroscopes and space navigation
  67. Breaking force of automobiles
  68. Highway vehicle weight
  69. Gasoline in internal combustion engines
  70. Horsepower of a 1995 Corvette
  71. Horsepower of 4-cylinder engines
  72. Possibility of non-polluting engine design
  73. Converting engines for fuels: gas to hydrogen
  74. Solar steam engine
  75. Storing liquid hydrogen and other gasses
  76. Material of baseball bats
  77. Plasma walls for controlled fusion
  78. Properties of quenched steel
  79. Residual stress release through cryogenics in metals
  80. Metal expansion rates
  81. Diesel engine combustion efficiency
  82. Fuel oil/Fuel gas burn temperatures
  83. Electrical current
  84. Speed electricity travels
  85. Circuits and electricity
  86. Birds on an electrical wire
  87. Higher tech wire in the new age of electronics
  88. Cryogenics and superconductors
  89. Frequency modulation explanation
  90. Color television and vision
  91. Help me understand generators and alternators
  92. Bridge opening and closing
  93. Underwater remote sensor
  94. Variable speed motor
  95. Variable capacitor availability
  96. Starting automobiles
  97. Things engineers do
  98. Becoming an engineer
  99. Becoming an aeronautical engineer
  100. Becoming a biomedical engineer
  101. Becoming a chemical engineer
  102. Music/audio engineers
  103. Becoming a nuclear engineer
  104. Prospects in Nuclear Engineering
  105. Best engineering field
  106. Pressure Conversion
  107. Actions on Automobile Emissions
  108. Mechanical Engineering
  109. Lightning as a Power Source
  110. Steel Processes
  111. Hovercraft
  112. Diesel Engines
  113. Brick Insulation
  114. Superconductive Wire
  115. Electronic Sensors
  116. Rocket Engine Sparks
  117. Newton's Laws and Solar Power
  118. Plexiglass
  119. Sound Testing of Strength
  120. Magnetohydrodynamics
  121. Heat Pump Efficiency
  122. Solar Panel Angles
  123. Radio Receiver Materials
  124. Plexiglas
  125. Efficient Engine
  126. AC Induction Motor
  127. Speaker Magnets
  128. Car Cylinders
  129. I Beam Shape
  130. Electrical Wiring
  131. Friction Engineering
  132. Electrical Engineer
  133. Video-Phone
  134. Horsepower Labels
  135. Airceraft Warning Spheres
  136. Hydraulics
  137. Energy Waves
  138. Washboarding
  139. Sawdust Machine
  140. Material of the Millennium
  141. Heat Dissipation
  142. Gear Evaluation
  143. Special Blower Drive
  144. Cavitation
  145. Plasma Speakers
  146. Alarm Circuits
  147. Metal Expansion
  148. Piezoelectric
  149. Echo Measurements
  150. Maglev Site
  151. Fiber Optic Cable
  152. Airplane Crashing Safety Devices
  153. Boiler Safety
  154. Triangulation
  155. Steel Properties
  156. Hydraulics
  157. Hydraulics2
  158. Ocean Housing
  159. Bulletproof Glass
  160. Space Shuttle Tires
  161. Rear View Mirrors
  162. Gas Recovery
  163. Light Bulb Filaments
  164. Nuclear Engineering
  165. Sound Wave Engineering
  166. Resistant Steel
  167. Magnetic Metals
  168. Fusion Reactor Progress
  169. Efficient Rocket Nozzles
  170. Passive - Active Solar Heating
  171. Power Plant Heating
  172. Fields of Engineering
  173. Biomedical Engineering
  174. Mechanical Engineering
  175. Helicopter Blades
  176. Tank Pressure
  177. Wood Properties
  178. Engine Terminology
  179. Airplane Engine Cooling
  180. Holographic Televison
  181. Plastic Containers
  182. Circuit Type
  183. Ozone Generator
  184. Compression Principle
  185. Coolers by Battery
  186. Engine Displacement
  187. Helium Tires
  188. Carbon Dioxide Generator
  189. Electronic Noise
  190. Air Bag Gas
  191. Acrylic and Expansion
  192. Coaxial Cables
  193. Viscosity of Non-Newtonian Fluid
  194. Thermal Transfer
  195. Calculating Displacement
  196. Injecting Compressed Air
  197. Nuclear Reactor Safety
  198. Bridge Expansion
  199. Heating Highways
  200. Sound Wave Movers
  201. Big Tires
  202. Trains and Steam Engines
  203. Calculating Delivery Efficiencies
  204. Light Bulb Pressure
  205. Steel and Moulds
  206. Heat Dissipation
  207. Paper Airplane and Wind
  208. Hydraulics
  209. Roller Coaster Construction
  210. Fuel Pump in Space
  211. Buildings and TV Reception
  212. Surface Tension Reference
  213. Crew Resource Management
  214. Current between Contacts
  215. Blings
  216. Wire and Temperature to Break
  217. Safety and Cars
  218. Water Attraction
  219. Induction Cooling
  220. Steel vs Wood Roller Coasters
  221. Weld Leak Check and He
  222. Valves
  223. Rear Wheel Drive Vehicles
  224. Cavitation
  225. Hologram TV
  226. Fusion and Breeder Reactors
  227. Cast vs. Pressed Steel
  228. Aluminum Cans
  229. 220 volts, not 200 volts
  230. Torque and Cars
  231. Rear Wheel Drive Vehicles
  232. Nitrogen and Hydraulics
  233. Freon Recovery
  234. Aircraft Compasses
  235. Strongest Steel Alloys
  236. Welding in Space
  237. High Performance Aircraft Nose
  238. Magnetic Properties of Steel
  239. Historical Meter Accuracy
  240. Speakers and dB
  241. Transformer Marking
  242. Sand Particles and Bricks
  243. Bridge Supports
  244. Sound/Light Display
  245. Quake Proof Building
  246. Windshield Glass
  247. Antireflection
  248. Catholics Protection
  249. Chlorine and Materials
  250. Massing Helium
  251. Gauge Pressure of Space
  252. Pulleys
  253. Gigawatts to Homes
  254. Wind Power
  255. Welding in Space
  256. CuO Conduction
  257. Polystyrene Cutter
  258. Rubber Building Foundation
  259. Electric Trains
  260. Polarized Plugs
  261. Concrete Type for Bridge
  262. Aerosol Can
  263. Liquid Density Applications
  264. Power Plant Output
  265. Rubber Bands and Elasticity
  266. Steel Properties
  267. Ozone and Combustion
  268. Teflon and Skis
  269. Brick Testing
  270. Altitude and Light Bulbs
  271. Energy and Dimmer Switches
  272. Dog Whistle and Hearing
  273. Lubricants and Friction
  274. Molten Steel Containers
  275. Commercial Uses of SSS
  276. Voltage and Efficiency
  277. Raising Lake Depth
  278. Sitting on Eggs - No Breaks!
  279. Hot Air Balloon Thremodynamics
  280. Liquid Nitrogen and Brittle Metal
  281. Spider Web Strength Measure
  282. Evaporative Loss Formula
  283. Aircraft Carrier Runways
  284. Glass Sinks
  285. Strength of Cypress
  286. Recharging Through Plastic
  287. Nuclear Efficiency
  288. Shaping EM Fields
  289. Coal to Electricity Energy Transfer
  290. Automobile Displacement
  291. Blowing Polystyrene
  292. Water and Magnets
  293. Nano-Sized Applications
  294. Polystyrene Foam, Hydrofoam, and Roofing
  295. Chimney Problem
  296. Flickering
  297. Stove Efficiency
  298. Nuclear Efficiency
  299. Air Pressure of a Hover Craft
  300. Magnetics and Fuels
  301. Measuring Water Pressure
  302. GPS Operations
  303. Blow-Off Valve
  304. Radiator Color
  305. Solar Power Replacement
  306. Equilateral Truss Bridges
  307. Roasting Wood for Strength
  308. Infra-Red Filter
  309. Gage Blocks and Vacuum
  310. TV Channel 1
  311. Human Oxygen Requirements
  312. Auto Engine and Cylinders
  313. Hover Craft Shopvac Size
  314. Laser Efficiency
  315. Refining Oil Made Simple
  316. Coldness, Hardness and Breakage
  317. Heat Dissipation by Spacecraft
  318. Earthquake Proof Building Foundations
  319. Liquid Nitrogen and Metals
  320. Retention vs Detention Pond
  321. Creating Ellipses in Pottery
  322. Shape of Hot Air Balloons
  323. Light Dimmer Efficiency
  324. Rear View Mirrors and Polarization
  325. Calibrating Ocular Micrometer
  326. Relative Speed and Striking Speed
  327. Geodesic and Strength
  328. Coffee, Cups, and Microwaves
  329. Magnets and Electricity Generation
  330. Solar Energy and Spectrum
  331. Centrifuge Separation
  332. Relative Speed and Striking Speed
  333. Carburetor and Oxygen
  334. Poloroids and Lenses
  335. Water Compression Systems
  336. Red Lights in Cockpits
  337. Turbo Jet Flame Out
  338. Lightweight Concrete Mixture
  339. Ringing the Right Number
  340. Garden Hose Pressure
  341. Electrostatic and Painting
  342. Sprinkler Pressure
  343. Lifeline Design
  344. Surface Area and Thermal Transfer
  345. Light Bulb Failure Causes
  346. Spring Compression Mechanics
  347. Water Expansion Pressure
  348. Bullet Lift
  349. Heat, not Electric Conductor
  350. Cold Metal Shattering
  351. Melting Igloos
  352. Jumping on the Moon
  353. Windshields and Thermal Effects
  354. Heat and Rubberbands
  355. Air Flow in Rooms
  356. Mars Rover Cammand and Control
  357. Tire and Asphalt Melting
  358. Nanobots
  359. Antennae and Wavelength
  360. Tire and Asphalt Melting
  361. Color and Reading
  362. R-Value of Polystyrene Foam Peanuts
  363. Striking a Car with Lightning
  364. Use of Inhibitors
  365. Surface Tension of Cells
  366. Pyrex Explosion
  367. Radar in a Tunnel
  368. Grid Angle for Optimum Solar Interaction
  369. Air and Liquid PSI Ratings
  370. Superconductor Applications
  371. Potential and Electric Heating Efficiency
  372. Smog Emissions of Hybrids
  373. UV Penetration and Plastic
  374. Colored Lights and Output
  375. Fluid Dynamics of Dropping Ball
  376. Thickness vs Strength of Material
  377. Slow Evaporation Rate Refrigerator
  378. Dog Whistle
  379. Thickness vs Strength of Material
  380. Sonar Mapping
  381. Fire Fighting Stream Rotation
  382. Singing Cold Power Lines
  383. Cellar Temperatures
  384. TV Lines and VCR
  385. Motor Construction
  386. Pseudo Solids
  387. Erosional Velocity
  388. Copper Color and Properties
  389. Oil to Gasoline
  390. Warfare Plane and Tank
  391. Microphone Magnets
  392. Polarized Outlets
  393. Pipe Diameter Change
  394. Image and Spacial Resolution
  395. Conics and Paragliders
  396. Glass and Metal Adhesion
  397. Acoustic Insulation
  398. Windmill Field
  399. Battery Life and Radio Volume
  400. Wood Does Not Melt
  401. DOE Report on Solar Panels 2004
  402. Next Vehicle Design
  403. Hydrogel For Cooling
  404. Thermal Stress and Glass
  405. Electrical Grounding in Airplanes
  406. Cooling of Cooling Fans
  407. Plants on Roof Tops
  408. Wheel Sizes in Vehicles
  409. Paper From Algae Pulp
  410. InkJet and Hotter Than The Sun
  411. Alloy Information
  412. Steam Engine Stack
  413. Optical Low Pass Filter
  414. Fine Particle Environment Safety
  415. Surface Tension and Surfactant
  416. Evaporation and Ocean With Oil
  417. Transformer Center Tap
  418. Radiator Color
  419. Electronic Balance Operation
  420. Fog, Tyndall Effect, Headlamps
  421. Radiator Color
  422. SWG
  423. Solar Position and Radio Reception
  424. Energy Efficient Roof Color
  425. Touch and Radio Signal Intensity
  426. Decibels, Loudness, and Perception
  427. Nitrogen Flow Rates
  428. Energy Efficient Roof Color
  429. Rear vs Front Wheel Drive in Winter
  430. Submarines and Dead Sea
  431. XM Radio
  432. Shielding Microwave Interference
  433. Graphite, Lubricants, Metals
  434. Submarine Density
  435. Car Wheel Sizes
  436. Pushing vs Pulling on Cog Railway
  437. 220v Bulb on 110v Circuit
  438. Silicone in Microwave
  439. Steel Thickness and Magnetism
  440. Making Compressed Gas Cylinders
  441. Jagged Lines on Flight Canopies
  442. Freon Temperature in Refrigeration
  443. Electroplating Plastics
  444. Friction Amount and Temperature Change
  445. Nuclear Tests and Smoke Trails
  446. Determining Material Strength
  447. Freeze Drying with Dry Ice
  448. Decorative Water Substitute
  449. Electroplating Plastics
  450. Plasma Cutting
  451. GMR's
  452. Wiring Tunnels for Radio Signals
  453. Sound Cancellation Device
  454. EM Impulse and Nuclear Explosion
  455. Light and Curved Windshields
  456. Electric Coil Safety
  457. Flight and Harmonic Vibrations
  458. Water Expansion After Frozen
  459. Light Bulb Installation Temperature
  460. Propeller Design
  461. Testing Glue Bonding
  462. Air Resistance and Shape
  463. Heat Shield for Spacecraft
  464. Infrared Solar Cells
  465. Fluid Flow and Hole Size
  466. Non-Periodic Carriers in Radio
  467. CRT and Vacuum Tubes
  468. Magnetic and Roller Coasters
  469. Fluorescent Lights and Efficiency
  470. Heat Sink Operation
  471. Paper Airplane Weight and Flight
  472. Snow, Ice and Electricity
  473. Cable Stay vs Suspension Bridges
  474. Tires Supporting Cars
  475. Car Cylinder Design
  476. Galileo Thermometer Operation
  477. Water and Friction
  478. Underwater Structures
  479. Auto Safety Features
  480. Laser Burning and Metals
  481. Siphon Flow Rate
  482. Tunnel Exhaust Extractors
  483. Micro-Aerial Vehicle Design
  484. Making Scale Models
  485. Potential Controlled Variable Capacitor
  486. Measuring Radio Radiation
  487. Refractive Index in Chemical Engineering
  488. Hot Air Balloons and Fire
  489. Life Preserver
  490. Coal Into Coke
  491. Flight of Heavy Airplanes
  492. Preventing Mud Slides
  493. Bridge Equations
  494. Submarines, Pressure, and Crushing
  495. Light Bulb Filament Length
  496. Current in Voice Coil
  497. Safe Approach and High Power
  498. Toothpaste Development
  499. Jet Engine Nozzles
  500. Discharging Capacitors for Disposal
  501. Cars, Dimples, and Air Resistance
  502. Clay Retaining Wall
  503. Pentagram and Structural Strength
  504. Water Pipe Size and Flow
  505. Cost of Producing Energy
  506. Thin Shuttle Design
  507. Thermisters and Electron Release
  508. Stirling Engine Applications
  509. Radio Transmitter Fundamentals
  510. Shape of Water Tower
  511. Jet Engine Efficiency at High Altitude
  512. Corelle Strength Testing
  513. Geothermal Home Heating
  514. Energy Absorption by Color
  515. Light Bulb Filament Length
  516. Paint, Acrylic, and Aging
  517. Airplane Fuel Tanks
  518. Bending Force of Spring
  519. Pump Pressure
  520. Ceiling Height and Cooling Cost
  521. Density Applications
  522. Lowering Voltage at Peak Times
  523. Hard Disc Magnets and Holders
  524. Sub-woofer
  525. Determining Strength of Levee
  526. Isotopes and Archeology
  527. Melting vs Burning
  528. Photoelectric Cells
  529. Sugar and Fat
  530. Sugar and Hyperactivity
  531. Rear vs Front Wheel Drive in Winter
  532. Gasoline Additive Applications
  533. Truss Bridge Limitations
  534. Lightning Resistors vs. Corona Effect
  535. Scuba Diver Communications
  536. Architecture and Engineering Programs
  537. Alternator and Battery Charging
  538. Levee Construction
  539. Law of Continuity, Bernoulli, Contradiction
  540. Standing on Paper Cups
  541. Soap Powered Boat Mechanics
  542. Estimated Operating Cost of Hydrogen Car
  543. Water and Particulate Reduction
  544. Bottle Shape and Failure
  545. Motor Brush Wear
  546. Mass vs Displacement Tonnage of Ship
  547. Cable Length and Strength
  548. Geometric Constant in Air Resistance
  549. Structure Preventing Submarine Collapse
  550. Bottle Shape and Failure
  551. Lighting Piezoelectric Crystals
  552. Manufacturing Spheres
  553. Wire Conductivity
  554. Neon Bulb Operation
  555. Photo Cells, Potential, Current, and Temperature
  556. Microwaves and Information Transfer
  557. Measuring Air Resistance
  558. Pressurized Cabins
  559. Heat Shield Heating: Friction or Compression
  560. Fitch Barriers
  561. Measuring Depth Pressure
  562. Coin Flipping and Mass Distribution
  563. Hand Pump Operation
  564. LED's and Light
  565. Water Pressure in Closed System
  566. Swimming in JP-8
  567. Wind Design for Buildings
  568. Greatest Helicopter Altitude
  569. Solar Panels, Electrolysis, and Feasibility
  570. Purifying Water and Media Size
  571. Insulating Potatoes
  572. Cantilever Applications
  573. Multi vs Single Strand Strength
  574. Shielding Radio Interference
  575. Light Efficiency, Heat, and Wattage
  576. Propulsion and Wing Placement
  577. Voltage Selection and Application
  578. American Canals
  579. Bubble Wrap and Thermal Transfer
  580. Tying Air Conditioning Tubes
  581. Freezer Efficiency and Environment Temperature
  582. Center of Buoyancy and Center of Gravity
  583. Measuring Volume of Liquid, Gas
  584. Water Velocity and Pipe Inclination
  585. Heat Shield Heating: Friction or Compression
  586. Glass Thickness for Aquarium
  587. Efficiency of Fluorescent Lights Revisited
  588. Synthetic Engine Oil
  589. Oxygen in Engines
  590. Transformer Windings (not Wingdings)
  591. Freezer Efficiency and Environment Temperature
  592. Submarine Propulsion Placement
  593. Breaking Raw Eggs
  594. Color and Engine Cooling
  595. Dew Point of Exhaust Gas
  596. Aircraft and Submarine Shape
  597. Dragging Tires to "Push Frost"
  598. Pressure in Centripetal Apparatus
  599. Trebuchet Construction
  600. Woven Copper in Magnetic Field
  601. Measuring Laser Energy Loss
  602. Scaling up Stator Motors
  603. Threading of Soda Bottles
  604. Wing Span and Flight
  605. Light Bulb Color and Temperature
  606. Infrared Sensing Technology
  607. Measuring Electrical Conductivity
  608. Controlling Wind Tunnel Experiments
  609. Radioisotope Thermoelectric Generator
  610. Fluid Resistance and Relative Motion
  611. Stickiness and Friction
  612. Propellers
  613. Brick Testing
  614. Ignition Coil Failure
  615. Multimeter AC and DC Misuse
  616. Transformer Taps
  617. Holes in Plates, Stronger?
  618. Manufacturing Polarization Filters
  619. Melting Lead and Releasing Forms
  620. Shingle Color
  621. Air Bag Folding
  622. Orifice and Hose Pressure
  623. Toothpick Strength
  624. Transformers in Series
  625. Tube Length and Air Flow
  626. Light Bulb Lifetime and Wattage
  627. Limits of Helicopter Altitude
  628. Roller Coasters and Energy
  629. Roller Coasters and Geometry
  630. Pressure, Temperature, and Freezing Water
  631. Concrete and Rebar
  632. Force of Freezing Water
  633. Maximum Car Interior Temperature
  634. Oil Immersion Lens
  635. Speaker Magnets and Age
  636. Windmill Turning
  637. Sending/Receiving Satellite Frequencies
  638. Effects of Wheel Radius
  639. Airplane Wheels After Takeoff
  640. Finding Optimum Cruising Speed of Car
  641. Energy Flow and Voltage Rating
  642. Flickering LCD and Florescent Light
  643. Hole in Sub-Woofer Cabinet
  644. Paper Airplane and Wingspan
  645. Drying Shed, White Roof
  646. Galvanized Pipe, Steel for Magnetic Core
  647. I-Beams
  648. Mixing Immiscible Fluid of Same Density
  649. Photovoltaic Colors
  650. Power Supply Energy Flow Without Appliance
  651. Generating Power With a Bicycle
  652. Mixing Immiscible Fluid of Same Density
  653. Solar Panel Efficiency
  654. Water Bridge and Weight
  655. Wheel Size and Speed
  656. Bridge Rollers
  657. Calculating Draft Clearance of Boats
  658. Fill and Evaporation Rates
  659. Tire Pressure and Traction
  660. Water Flow Pressure in Pipe
  661. Optimizing a Solar Water Heater
  662. Building Bridges
  663. Diesel Engine Production Efficiency
  664. Calculating Battery Power
  665. Phantom Electric Loads
  666. Sand Grain Size and Brick Strength
  667. Engine Combustion and Oxygen
  668. Powder Explosion Risk
  669. Light bulb Heat and Light Relationship
  670. Falling Objects and Bouncing
  671. What is Electrical Noise?
  672. Building a Lightning Detector
  673. Finding Force of Drag
  674. Pump Limits
  675. Force Probe Operation
  676. Karrick Process Apparatus
  677. Energy for Heating Versus Cooling a House
  678. Coanda Effect and Pouring Milk
  679. Mass of Shuttle and Floating Objects
  680. Waveguide Shapes
  681. Stove Versus Microwave Efficiency
  682. Wind Turbine Size
  683. Tapping Energy from Buoyancy
  684. Boats and Transmissions
  685. Finding Air Drag Coefficient
  686. Poured Fluid and Trapped Air
  687. Container Shape and Pressure
  688. Coefficient of Friction Change with Heat
  689. Glue Strength Tests
  690. Solution for Slippery Roads
  691. Hydrogen Fuel Cell
  692. Coefficient of Friction Change with Heat
  693. Determining Fatal Injury Collisions
  694. Folded Horn Subwoofer
  695. Melting Ice, Energy Transfer, Buoyancy, and Surface Area
  696. Structure Failure Analysis Protocol
  697. Heat Storage Tank Contents
  698. Measuring Solar Furnace Light Intensity
  699. Wheel Size and Performance
  700. Vortex Shape and Geometry
  701. Mobile Phone Modulation
  702. Balloon "Jet" Propulsion
  703. Dimmable Fluorescent Lights
  704. Measuring Solar Furnace Light Intensity
  705. Ethanol Engines
  706. Aerated Pond Water Flow
  707. Water Compressibility
  708. Watts and Energy
  709. Sports Drink Energy Footprint
  710. Coefficient of Restitution
  711. Fuel Ratio and Thermodynamics
  712. Mass of Magnetic Information
  713. Calculating Aerodynamic Shape
  714. Stepper Motor
  715. Moving Air and Noise Generation
  716. Railroad Control Part
  717. Air Resistance and Throwing Balls
  718. Half Batteries Not Half Current
  719. Power Grids
  720. Video Screens and Light
  721. AM and FM Frequency Selection
  722. Diesel Compression
  723. Maglev and Electric Failure
  724. Runaway Diesel From Own Tank
  725. Faraday Cage and Circuit Disconnect
  726. RPM and Thrust
  727. Grounded Aluminum Powder Coated Tanks
  728. Reversed Current, DC Motor Brushes
  729. Pressure and Chemical Manufacture
  730. Fuel Efficiency and Amount of Gas in Tank
  731. Boat Speed: Salt versus Fresh Water
  732. Strength of Plastic Bottles
  733. Yaw Drives and Turbines
  734. Clean Ground Link
  735. Snow as Energy Source
  736. Strand versus Twisted Rope Strength
  737. Car Temperature in Morning; Equilibrium?
  738. Hollow Ball Bounce Height and Altitude
  739. Bridge Before Road Freezing
  740. Computation for Speed of Optimal Mileage
  741. Low, High Voltage and Electronics
  742. FM Half Wave Antenna
  743. Rocket Fin Design
  744. Inverted Bottle, Air Pressure, Hole Size
  745. Solar Flares and Inactive Transistors
  746. Smoke and Electrical Arcs
  747. Electrostatics and Hair Type
  748. Yo-yo, Rotation, and String Side
  749. Camera Flash, Pan, and Ping
  750. Measuring Contact Pressure
  751. Measuring Heat Flow
  752. Low, High Voltage and Electronics
  753. Perpetual Energy-Motion-Buoyancy Device
  754. Smart Dust
  755. Back EMF
  756. Mercury and Radioisotope Thermalelectric Generators
  757. Crude Oil in Swimming Pool
  758. Gas Properties in a Pipe
  759. Ionizing Oil to Aid Cleanup
  760. Measuring Concentration
  761. Refinery Flares
  762. Gas Mileage and Preheated Air
  763. Ozone for Enhanced Combustion
  764. Vacuum Container and Buoyancy
  765. Hot Air Balloon Shape
  766. Materials and Thermal Emissivity
  767. Padding and Injury
  768. Modeling Ground Temperature
  769. Moving Truck Pressure Difference and Energy
  770. Building Height and Wind Energy
  771. Crosstalk
  772. Mass and Downhill Runs
  773. Vibrational to Electric Energy
  774. Automotive Exhaust Measurements in Varied Locations
  775. Friction of Bubbles
  776. Strength of In Service Bridges
  777. Force of Wind on Building
  778. Washboard Dirt Road
  779. Roller Coaster Brakes
  780. Force of Wind on Building
  781. Mass and Downhill Runs
  782. Rate of Vacuum Leak
  783. Tire Pressure and Braking Distance
  784. Imaging the Ocean Floor
  785. Load, Shape, and Failure
  786. Winglets and Flight
  787. Combustion Engine and Pure Oxygen
  788. Drag and Parachute Geometry
  789. Return to Biplanes
  790. Difference Between Stress and Strain
  791. Electrical Conductivity and Wire Bending
  792. Engineering Fields
  793. Earthquake Resistance Building Scale
  794. Heat Gain by Solar Radiation Versus Loss by Evaporation in Pool
  795. Hot Air Balloon Shape and Altitude
  796. Humid Versus Dry Air and Kite Lift
  797. Lift, Friction of 18-Wheelers
  798. Liquefication of Gas and Storage
  799. Air Rush Through Narrow Space
  800. Shoes and Energy
  801. Mud House Construction
  802. Aquatic Exercise and Buoyancy
  803. Steam Engine in Reduced Pressure
  804. Aquatic Exercise and Buoyancy
  805. Hydrogen Peroxide and Fuel Cells
  806. Heat Shield and 120 000 Foot Fall
  807. Rentricity
  808. Turbulence Modeling and Wing Design
  809. Electrical Transmission and Grounding
  810. Purging Gas and Optics
  811. Humid Versus Dry Air and Kite Lift
  812. Disciplines for Microwave Heating
  813. Superheated Steam
  814. Hydrogen Fuel for Aircraft
  815. Aircraft Charging and Discharging
  816. Model Rocket Design Failure
  817. Wingspan and Hang Time
  818. Fabricating Transistors and Electronic Chips
  819. Heavy, Light Hot Wheels Cars and Ramps
  820. Sinking Ship Vortex Equations
  821. Pouring Solids, Acting as Fluids
  822. Wingspan and Hang Time
  823. Photovoltaics and Heat
  824. Directions and Orientation is Space
  825. Balloons and Pressure
  826. Battery Output and Amp-hours
  827. Propeller RPM and Weight of Craft
  828. Wireless Electricity
  829. Aluminum Oxide Paint and Grounding Tanks
  830. PNP Versus NPN Transistors
  831. Hose Pressure and Output
  832. Drag and Hot Air Balloons
  833. Rolling Ball, Friction, and Drag
  834. Designs of Turns on Roller Coasters
  835. Air Resistance and Temperature
  836. Spinning Reserve and Energy
  837. Radio Wave Spiraling in a Microwave Oven
  838. Recharging With Piezoelectric Discs
  839. Selective Cutting and Support Weight
  840. PSIG Explanation
  841. Acid Bath Safety
  842. Load Cell and Food Portion
  843. Road Corrugations
  844. Building Greenhouse with Minimal Night Loss
  845. Building Piers
  846. Circular Lens, Rectangular Image
  847. Solar Cell Installation and Lake Reflection
  848. Heat Transfer and Pipe Geometry
  849. Capillary Action, Wicking, Geometry
  850. Dimmer Switch and Voltage
  851. Magnets and Carburetor
  852. Wooden Dowels on Kites
  853. Displacement of Boats
  854. Penny Dropping in Water
  855. Siphon Pressure with Closed Tube
  856. Hose Position When Filling Pool
  857. Lightning Rods and Soil
  858. Buoyant Force Equations
  859. Car Pitch and Acceleration
  860. Venetian Blinds and Night Temperature Regulation
  861. Efficiency of Compressed Air Energy Storage
  862. Terrestrial Ion Propulsion
  863. Transformer Taps and Phases
  864. Calculating Aspect Ratio of Wing
  865. Measuring Speed and Air Resistance
  866. Mechanics of Sound Absorption
  867. Double Insulated Appliances and Safety
  868. Truncated Cone and Support ]
  869. Solar Absorption and Surface Characteristics ]
  870. Wall Tipping ]
  871. Aircraft Wing to Body Weight Proportion ]
  872. Double Insulated Appliances and Safety ]
  873. Green Circuit Boards ]
  874. Measuring Light Reflection ]
  875. Throwing Frisbee Same Way ]
  876. Wind Energy Comparison ]
  877. Rocket Flame and Wasted Energy ]
  878. Bullet Velocity and Melting Lead ]
  879. Splitting Lines from Vacuum Chamber ]
  880. Stoke's Law ]
  881. Car Starter and Changing Polarization ]
  882. Chip Mask Resolution and Diffraction ]
  883. Why Wrong Meter Range Gives Results ]
  884. Extreme Condition Engineering ]
  885. Extreme Condition Engineering ]

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