Rtk Gps Project

I built a RTK-GPS gadget and wrote enough software to do basic GNS tasks such as finding distances, decoding GPS NMEA and RTCM messages, finding intersections, and doing boundary detection.

The Cosmic Distance Ladder

The Cosmic Distance Ladder is how mankind has determined the distances to various astronomical objects, basically by deducing closer “rungs” on the ladder and using them to determine farther distances (higher rungs on the ladder).

These notes are from Terry Tao, modified by me to suit my audience and to add other topics.