Magnification

Shadow magnification

1 / 30

Slide 1: Slide

NatuurkundeMiddelbare schoolhavo, vwoLeerjaar 2,3

This lesson contains 30 slides, with interactive quizzes, text slides and 4 videos.

Lesson duration is: 30 min

Items in this lesson

Shadow magnification

Slide 1 - Slide

Slide 2 - Slide

Slide 3 - Slide

Slide 4 - Slide

Calculating
magnifications
How can you do this?

Slide 5 - Mind map

You know how to calculate the magnification using a formulae

You know how to determine the magnification using a technical drawing

You are familiar with the principle of point, dash, dash as a basis for your technical drawing

Slide 6 - Slide

Slide 7 - Slide

• | |

Before solving a magnification question first draw • | |

That is your base to work with formulas. After that you can just fill in the date into the formula:

N = B/V = b/v

Slide 8 - Slide

Changing the distance from the object to the lightsource, will also change the size of the shadow.

The relationship between the two is described using the formula for magnification

Slide 9 - Slide

Slide 10 - Slide

Slide 11 - Slide

Formula

Physicists use formulas to describe nature.

We will do the same thing by converting that what we can draw into a formula.

O= height of the object

I = height of the image

o = object distance

i = image distance

You have already seen that the relationship between the size of the object and its shadow is equal to the ratio between the object distance and the image distance. From now on we will cal this ratio magnification

N = magnification

This results in two formulas

N = \frac{​ I ​ ​}{​ O ​}

N = \frac{​ i ​ ​}{​ o ​}

Slide 12 - Slide

Slide 13 - Video

Slide 14 - Video

Slide 15 - Video

Slide 16 - Video

Slide 17 - Slide

Slide 18 - Slide

Slide 19 - Slide

Slide 20 - Slide

Slide 21 - Slide

Slide 22 - Slide

Slide 23 - Slide

Calculate the values for
every numbered cell

Slide 24 - Open question

Slide 25 - Slide

Slide 26 - Slide

Slide 27 - Slide

Slide 28 - Slide

Slide 29 - Slide

Slide 30 - Slide