Early NASA Timeline

Here are my notes from Gene Kranz' book "Failure is Not an Option" about the Early History of NASA's Mercury, Gemini, and Apollo Space Programs (click on pictures to enlarge or right click and open in a new window for full resolution).







Note: Click the link if you'd like to view (all the video footage from the Apollo Lunar Landings and EVA's on the surface of the Moon) as well.


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Dot Configuration Pyramid Spiral

 
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Model Trains

Here are some images I recently took from a Model Train Convention :) Here are some model trees: Here are some model buildings: Note - this last display from 2020 Hobbies had oscillating and rotating parts.

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Martian Dry Ice Craters

The following is a 3 phase water diagram with a 3 phase carbon dioxide diagram superimposed over the top: At moderate room temperatures (60F - 100F) carbon dioxide can build up to dozens of atmospheres of pressure (14.7 psi = 1 atm). Tire pressure is about 3 atmospheres or 40 psi, and most air compressors that pump tires can achieve about 15 atm or 180 psi. If an air compressor explodes that makes a big explosion, now consider how CO2 gas can build up to about 80 atmospheres of pressure before 2 phasing or beginning to liquidize (see chart above), an explosion of that magnitude would likely create "bomb" craters on Mars. Theoretically Mars past consisted of an exponential decay of such crater formations if it once was covered with dry ice.

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Texas Hold-Em Lingo

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PoChess

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Circuit Resonance

The following shows a Simple Resonant Circuit (SRC) on PSpice:
Here the SRC is supergenerated by an operational amp then boosted by a transistor amplifier producing tones out a speaker:


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Gravitational Collisions

Here is a representation of elastic and inelastic collisions using an experimental air track system and collision magnets: Here are the initial steps for reducing a 2 dimensional elastic collision down to a 1 dimensional elastic collision: Here is an example problem of the additional steps for solving a 1 dimensional elastic collision: Here is my own depiction of the dynamic gravitational forces on a rocket performing a planetary flyby: This shows the way in which a gravitational interaction can be modeled similar to a collision with the center of mass at the more massive body (gravitational collisions are a more complicated process as linear and angular momentum as well as gravitational kinetic energy may or may not be conserved all depending on the specific parameters, perhaps aerobraking or rocket propulsion are taken into account, and other effects such as magnetic forces and light or plasma radiation play an effect too depending on the circumstances): Here is an artist's depiction of the longterm gravitational trajectories that asteroids tend to take as they interact with planets and moons:

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Turbulent Flow Fields

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Flying Cars

Source: Google

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