Thames & Kosmos Scope Constructor handleiding

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Thames & Kosmos

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Handleiding

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HERE’S HOW

. Starting with the setup from Experiment ,

replace the +R Convex lens with the

+R Convex lens. Keep the two +R

Convex lenses in place.

. Position the lenses  mm apart and

repeat the observation from the previous

experiments, slowly moving the eyepiece

lens back and forth until you see a clear

image.

WHAT’S HAPPENING

The image is still upside down, or inverted. The image is smaller (less

magniﬁed) than in Experiment , but the visual ﬁeld is also wider. This

means that you can see more of the object, but it is less magniﬁed.

At this point, you should be starting to see how diﬀerent

combinations of lenses can be used to enlarge images in diﬀerent

ways for diﬀerent purposes.

But what about the fact that the images have been upside down in

each of the experiments so far? Is there a way to make them appear

right-side up?

Distance

About 210mm

+170R Convex lens

(objective lens)

+40R Convex lens p14-x2

(eyepiece lens)

(Step 2)

Model 2-1, 2-2, 4-1, 4-2

Model 3,7,8: +300mm凸透鏡

Model 4: +170mm凸透鏡

Model 3,4: +40mm凸透鏡

Model 7,8: - 40mm凹透鏡

Model 5: +300mm凸透鏡

Model 6: +170mm凸透鏡

Model 5,6: +40mm凸透鏡x2

(Step 2)

Model 2-1, 2-2, 4-1, 4-2

Model 3,7,8: +300mm凸透鏡

Model 4: +170mm凸透鏡

Model 3,4: +40mm凸透鏡

Model 7,8: - 40mm凹透鏡

Model 5: +300mm凸透鏡

Model 6: +170mm凸透鏡

Model 5,6: +40mm凸透鏡x2

小技巧：

1. 右手拿40R凸鏡*2，貼近眼睛前面。

2. 左手拿170R凸鏡，手臂彎曲，貼近鏡筒前面。

3. 左手慢慢地往前移動，就可以看到清楚的影像。

model 6

+170R Convex lens

+40R Convex lens x2

Lens system

Objective lens: +170R Convex lens x1

Eyepiece lens: +40R Convex lens x2





 mm

EXPERIMENT 6

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