| Albert Einstein | Austrian/American physicist who developed the theory of relativity |  |
| Charles Babbage | English mathematician who developed the first programmable computer - mechanical |  |
| Johannes Kepler | German astronomer who developed planetary laws of motion |  |
| James Joule | English physicist who studied properties of heat |  |
| Robert Van de Graaff | American high voltage experimenter |  |
| Edwin Armstrong | American electrical engineer who developed FM radio |  |
| Walter Schottky | German physicist who invented the screen-grid vacuum tube and discovered the Schottky effect |  |
| Friedrich Bessel | German mathematician who developed functions named after him |  |
| Tycho Brahe | Danish astronomer who studied planetary motion |  |
| Ernst von Siemens | German scientist credited for founding electrical engineering in Germany, unit of conductance named after him |  |
| Ernõ Rubik | Hungarian architect who invented the Rubik's Cube |  |
| Nikola Tesla | Serbian electrical engineer who dabbled in high voltages and wireless communications |  |
| Grace Hopper | American Navy admiral who coined the term computer "bug" |  |
| John Backus | American computer scientist who developed the FORTRAN language |  |
| Siméon Poisson | French mathematician who developed the equations that bears his name |  |
| Blaise Pascal | French mathematician |  |
| Jacques d' Arsonval | French physicist and inventor of the moving-coil galvanometer |  |
| Leo Baekeland | Belgian chemist who invented Bakelite |  |
| John Bardeen | American engineers who invented the transistor |  |
| EdmondHalley | English astronomer who discovered the comet named after him |  |
| Bill Hewlett | American electrical engineer, ½ of HP | %20Hewlett.jpg) |
| Gabriel Fahrenheit | French physicist who created the Fahrenheit temperature scale |  |
| CarlGauss | German mathematician who work with statistical distributions |  |
| Guglielmo Marconi | Italian inventor who developed wireless communications |  |
| Jean-Baptiste Biot | French physicist who co-developed the Biot-Savart Law that describes the magnetic field generated by a an electric current |  |
| Robert Watson-Watt | English electrical engineer, "Father of Radar" |  |
| Evangelista Torricelli | Italian physicist who investigated pressures |  |
| Hedy Lamar | American actress credited with conceiving of frequency-hopping spread spectrum |  |
| Wilhelm Röntgen | German physicist who discovered x-rays |  |
| Neils Bohr | Danish physicist who developed the planetary model of atoms |  |
| Jean Fourier | French mathematician who developed the series named after him |  |
| Georg Ohm | German physicist who has the unit of resistance named after him |  |
| Gustav Kirchhoff | German physicist who developed laws on current and voltage in a closed circuit |  |
| Enrico Fermi | Italian physicist most noted for his work on the development of the first nuclear reactor |  |
| Joseph von Fraunhofer | German astronomer who discovered solar absorption lines |  |
| Jules Lissajous | French mathematician who's patterns can be created with the X-Y inputs of an o-scope |  |
| Ludwig Boltzmann | Austrian physicist who discovered the constant 1.3806503 × 10-23 m2 kg s-2 K-1 |  |
| Svante Arrhenius | Swedish scientist who discovered the relationship of temperature on process rates - like electronics accelerated aging |  |
| MarieCurie | Polish physicist famous for work in radioactivity |  |
| Heinrich Lenz | Baltic German physicist who developed the magnetic induction law bearing his name |  |
| David Packard | American electrical engineer, ½ of HP |  |
| Hiram Maxim | ARRL founder |  |
| Hermann von Helmholtz | German physicist who invented a coil arrangement that produces a uniform magnetic field within itself |  |
| Lee De Forest | American engineer who invented the Audion vacuum tube |  |
| Thomas Edison | Prolific American inventor of the evil, Earth-murdering incandescent light bulb |  |
| André-Marie Ampère | French physicist who experimented with electromagnetism and has unit of current named after him |  |
| Anders Ångström | Swedish physicist who specialized in spectroscopy who has unit of wavelength named after him |  |
| Isaac Newton | English Physicist who formulated the law of gravity |  |
| Alexander Bell | American scientist who invented the telephone |  |