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| CONTENTS | |
| Introduction | |
| Fermi"s Piano Tuner Problem | |
| How Old is Old? | |
| If the Terrestrial Poles were to Melt... | |
| Sunlight Exerts Pressure | |
| Falling Eastward | |
| What if an Asteroid Hit the Earth | |
| Using a Jeep to Estimate the Energy in Gasoline | |
| How do Police Radars really work? | |
| How "Fast" is the Speed of Light? | |
| How Long is a Light Year? | |
| How Big is a Trillion? | |
| "Seeing" the Earth, Moon, and Sun to Scale | |
| Of Stars and Drops of Water | |
| If I Were to Build a Model of the Cosmos... | |
| A Number Trick | |
| Designing a High Altitude Balloon | |
| Pressure in the Vicinity of a Lunar Astronaut Space Suit due to Outgassing of Coolant Water | |
| Calendar Calculations | |
| Telling Time by the Stars - Sidereal Time | |
| Fields, an Heuristic Approach | |
| The Irrationality of | |
| The Irrationality of | |
| The Number (i)i | |
| Estimating the Temperature of a Flat Plate in Low Earth Orbit | |
| Proving that (p)1/n is Irrational when p is a Prime and n>1 | |
| The Transcendentality of | |
| Ideal Gases under Constant Volume, Constant Pressure, Constant Temperature and Adiabatic Conditions | |
| Maxwell"s Equations: The Vector and Scalar Potentials | |
| A Possible Scalar Term Describing Energy Density in the Gravitational Field | |
| A Proposed Relativistic, Thermodynamic Four-Vector | |
| Motivational Argument for the Expression-eix=cosx+isinx | |
| Another Motivational Argument for the Expression-eix=cosx+isinx | |
| Calculating the Energy from Sunlight over a 12 hour period | |
| Calculating the Energy from Sunlight over actual full day | |
| Perfect Numbers-A Case Study | |
| Gravitation Inside a Uniform Hollow Sphere | |
| Further note on Gravitation Inside a Uniform Hollow Sphere | |
| Pythagorean Triples | |
| Black Holes and Point Set Topology | |
| Additional Notes on Black Holes and Point Set Topology | |
| Field Equations and Equations of Motion (General Relativity) | |
| The observer in modern physics | |
| A Note on the Centrifugal and Coriolis Accelerations as Pseudo Accelerations - PDF File | |
| On Expansion of the Universe - PDF File |
How Big is a Trillion?
In the U.S., one trillion is written as the number "1" followed by 12 zeros (1,000,000,000,000). One year of clock time =
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Six trillion seconds equals 189,276 years. Now, as an aside, along with the nearly six trillion miles in the light-year, you might be interested to know that there are nearly five trillion dollars in the current U.S. national debt. Is it any wonder that our politicians in Washington are concerned?
(An interesting bit of trivia: If one were to count the national Debt at the rate of one dollar per second, he or she would have to use a mechanical counter to click off the digits.
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Why? Because, if he or she counted in the usual way, saying "one, two, three, …" etc., there would be numbers whose names are so large, that it would take more than a second of clock time to pronounce them. For example: "Nine hundred and ninety nine billion, nine hundred and ninety nine million, nine hundred and ninety nine thousand, nine hundred and ninety nine," takes about 8 seconds to pronounce.)