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5uper5tring wrote:(1) Who is supposed to remove the mirror covers at the end of the lab? The student(s) or the proctor? If the mirror placement is disturb in the process, are the students allowed to re-adjust?
(2) In the 2018 Optics Scoring Sheet, there is a column for "Laser No Wall" to indicate if the Laser strikes a wall of the box. If some of the mirrors are not perfectly vertical or if the laser is not perfectly aligned horizontally (pointing a little too high or low) resulting in the final beam hitting the floor before reaching the back wall or hitting above the backwall, how does that affect the score?

Thanks!

5uper5tring wrote:(1) Who is supposed to remove the mirror covers at the end of the lab? The student(s) or the proctor? If the mirror placement is disturb in the process, are the students allowed to re-adjust?
(2) In the 2018 Optics Scoring Sheet, there is a column for "Laser No Wall" to indicate if the Laser strikes a wall of the box. If some of the mirrors are not perfectly vertical or if the laser is not perfectly aligned horizontally (pointing a little too high or low) resulting in the final beam hitting the floor before reaching the back wall or hitting above the backwall, how does that affect the score?

Thanks!

chalker wrote:I've never personally seen a laser deflect too high or low, so it's very unlikely to happen. However, again it will be up to the individual event supervisor how to handle it. If it happened in an event I was running I'd use a ruler as a straight edge to determine where it would have hit the wall.

OpticsCoach12 wrote:Is there any guidelines for setting the barrier for Optics B group. It is mentioned , it can be setup in angular ( including perpendicular to center ). atleast barrier should always face towards target side to ensure we can hit target using barrier mirror.

5uper5tring wrote: (2) In the 2018 Optics Scoring Sheet, there is a column for "Laser No Wall" to indicate if the Laser strikes a wall of the box. If some of the mirrors are not perfectly vertical or if the laser is not perfectly aligned horizontally (pointing a little too high or low) resulting in the final beam hitting the floor before reaching the back wall or hitting above the backwall, how does that affect the score?

meierfra wrote:

5uper5tring wrote: (2) In the 2018 Optics Scoring Sheet, there is a column for "Laser No Wall" to indicate if the Laser strikes a wall of the box. If some of the mirrors are not perfectly vertical or if the laser is not perfectly aligned horizontally (pointing a little too high or low) resulting in the final beam hitting the floor before reaching the back wall or hitting above the backwall, how does that affect the score?

Rule 4g says the event supervisor is required to demonstrate the beam's alignment to each team, hopefully showing that the beam is neither left or right nor high or low.

5uper5tring wrote:
A not perfectly vertical mirror could also result in laser team striking too high or too low. The bottom line is that participants shouldn't be penalized for things they can not control.

chalker wrote:

5uper5tring wrote:
A not perfectly vertical mirror could also result in laser team striking too high or too low. The bottom line is that participants shouldn't be penalized for things they can not control.

I'm confused how you think the participants are being penalized in this situation? The rules explicitly say accuracy is only the horizontal distance from the target point, not the vertical distance.

Unome wrote: This happened to one of our teams at UGA last weekend - the laser light actually ended up hitting one of the participants. The ES decided to, apparently, just give them a distance of 30 cm (according to the participants involved, that's actually what they said).