I just read that the men's 200 MR was DQd at Worlds. That race could've given Phelps a record 8th gold medal... bummer.
Phelps was very gracious about it. He said, "We came in here as a team, we exit as a team."
Sigh.
PS Did you see the size of his HANDS! I would like to swim just one race with hands his size, and feet the size of Thorpe's. (Yep, I have puny little paws!)
My understanding is that the correction is there because the pressure switches show a lack of pressure while the swimmer is still in contact because the pressure decreases in the last moment of contact even though there is contact. There was a study done using high speed cameras and the pads to see what the typical values were. Then they decided on a "fair" value to cover all cases. Some systems automatically delete this fudge factor while others do not.
Also, propagation delays are not caused by the distance of the wire per se. They are brought about by induction and capacitance in the line. When I spoke with one of the major timing vendors, they admitted they had never studied the issue.
Leo
My understanding is that the correction is there because the pressure switches show a lack of pressure while the swimmer is still in contact because the pressure decreases in the last moment of contact even though there is contact. There was a study done using high speed cameras and the pads to see what the typical values were. Then they decided on a "fair" value to cover all cases. Some systems automatically delete this fudge factor while others do not.
Also, propagation delays are not caused by the distance of the wire per se. They are brought about by induction and capacitance in the line. When I spoke with one of the major timing vendors, they admitted they had never studied the issue.
Leo
