5) laser pointer in homemade holder 6) photogate and
TRANSCRIPT
5) Laser Pointer in homemade holder 6) Photogate and holder one side
7) Photogate and holder other side 8) Vehicle triggering final photogate
TRANSCRIPT
5) Laser Pointer in homemade holder 6) Photogate and holder one side
7) Photogate and holder other side 8) Vehicle triggering final photogate