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Sunday, December 27, 2009

Wednesday, December 23, 2009

Collisions and Gravitational Interactions

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:

Note - People who like this post will also like The Best So Far

Tuesday, December 22, 2009


Submarine Car



Spaceship One

...if my optimistic estimates are correct, there should be a Sub-Boat-Sky-Spacecar someday.

-- UPDATE --

It would also be rad to romp around in a hybridized one of these

Or to rove the Moon or Mars on one of these

Wednesday, December 16, 2009

Venus Sub and Ship Trap

This is the kind of missile defense system we really need, geeze!

The Russians are still testing ICBM missiles, I'm not really sure for what purpose exactly, but anyhow here is a video of a failed missile that went into an out of control spiral....

Tuesday, December 8, 2009

Sunday, December 6, 2009