Optics B/C

[Pettywap]

How is a ray diagram drawn with two convex lenses?

Draw the ray diagram for the first convex lens as you would normally. Use the image from the first ray diagram as the object for the second ray diagram.

What happens if the image goes past the second lens and is inverted?

[Adi1008]

How is a ray diagram drawn with two convex lenses?

Draw the ray diagram for the first convex lens as you would normally. Use the image from the first ray diagram as the object for the second ray diagram.

What happens if the image goes past the second lens and is inverted?

First ray: Back project from the first image through the center of the second lens for one ray (since this ray is undeflected by the second lens).
Second ray: Go from the original object through the first focus, and then the first lens which then emerges parallel to the principal axis. Then, it'll go through the second lens and go towards the second focus.

The intersection of these two ray should help you define the final image.

I think it shouldn't matter much whether the image from the first lens inverted or upright

[Pettywap]

Draw the ray diagram for the first convex lens as you would normally. Use the image from the first ray diagram as the object for the second ray diagram.

What happens if the image goes past the second lens and is inverted?

First ray: Back project from the first image through the center of the second lens for one ray (since this ray is undeflected by the second lens).
Second ray: Go from the original object through the first focus, and then the first lens which then emerges parallel to the principal axis. Then, it'll go through the second lens and go towards the second focus.

The intersection of these two ray should help you define the final image.

I think it shouldn't matter much whether the image from the first lens inverted or upright

Can you explain this one?
"Two thin converging lenses each with a focal length of 40 cm are positioned with 40 cm apart. An object is placed 60cm to the left of the first lens."

[Ganti]

Is there a formula or strategy for LSS (Division B). First time here doing any middle school event

[reed303]

Is there a formula or strategy for LSS (Division B). First time here doing any middle school event

Some info to get you started can be found here:
https://scioly.org/wiki/index.php/Optics#Laser_Shoot

[Ganti]

Is there a formula or strategy for LSS (Division B). First time here doing any middle school event

Some info to get you started can be found here:
https://scioly.org/wiki/index.php/Optics#Laser_Shoot

I have read the instructions. But don’t know the strategy used to place the mirrors. Is it hit and try method?

[Pettywap]

Is there a formula or strategy for LSS (Division B). First time here doing any middle school event

Some info to get you started can be found here:
https://scioly.org/wiki/index.php/Optics#Laser_Shoot

I have read the instructions. But don’t know the strategy used to place the mirrors. Is it hit and try method?

That's not possible because the laser can only be turned on after the 4 minutes are up.

[reed303]

Is there a formula or strategy for LSS (Division B). First time here doing any middle school event

Some info to get you started can be found here:
https://scioly.org/wiki/index.php/Optics#Laser_Shoot

I have read the instructions. But don’t know the strategy used to place the mirrors. Is it hit and try method?

After you build your own practice LSS, you practice placing the mirrors at various angles to hit any given spot on the Target ruler.

From that most teams develop a paper template, that you can lay over the Event LSS (without interfering with the barrier mirror), and then take their best shot at aligning the covered mirrors so as to hit the Target spot when the covers are removed and the laser turned on.

[jxxu20]

Hi all,

I'm in a really desperate situation right now. Because of today's snowstorm (in NJ), school has been cancelled for today. The weather forecast for my town says that the high temperature for tomorrow is 13 degrees and the low is 2 degrees; however, it will be a sunny day. Hence, the sun will melt the snow but then it will freeze and turn into ice. Therefore, school might be cancelled tomorrow (again).

With that being said, I left my Optics LSS at school yesterday; if there is no school tomorrow, I will not be able to retrieve my LSS and do some much-needed practice for Optics. Even worse, I have regionals (at UCC) next Tuesday; furthermore, I haven't even finished making my templates! What do I do???!!!

[Pettywap]

Hi all,

I'm in a really desperate situation right now. Because of today's snowstorm (in NJ), school has been cancelled for today. The weather forecast for my town says that the high temperature for tomorrow is 13 degrees and the low is 2 degrees; however, it will be a sunny day. Hence, the sun will melt the snow but then it will freeze and turn into ice. Therefore, school might be cancelled tomorrow (again).

With that being said, I left my Optics LSS at school yesterday; if there is no school tomorrow, I will not be able to retrieve my LSS and do some much-needed practice for Optics. Even worse, I have regionals (at UCC) next Tuesday; furthermore, I haven't even finished making my templates! What do I do???!!!

You could finish at least 4 mirrors if you are doing the 45, 45,90 triangle setup