Description
These linear polarizers are about the size of a credit card, namely 5 by 8 cm, a format we found to work very well in hands-on experiments. They are made from the same material which is used to make polarized sunglasses (TAC), meaning they are reasonably scratch resistant. To remove fingerprints, you can clean them with a soft cloth – just like you would clean your sunglasses.
An explanation how this polarizing film work, can be found in the section 'Findings' at the experiment "Twisting Light".
Experiments
Holding a transparent plastic object between crossed polarizers reveals the inner stress of the object – and beautiful colors.
How does a third polarizer make light pass through crossed polarizers?
Specification
Details of a single Polarizer:
| Material |
Triacetate Cellulose (TAC) polarized film (normally used for sunglasses) |
| Width |
8 cm |
| Height |
5 cm |
| Thickness |
0.2 mm |
| Weight |
0.9 g |
Sets
For your information, these are the prices of a single polarizer in different sets:
| Personal |
0.790€ |
| Small Class Set |
0.564€ |
| Regular Class Set |
0.491€ |
In case you prefer a different set size, you can order multiple personal sets – if the overall size exceeds the limits for small or regular class sets, the unit price is automatically adjusted. Please avoid combining different set sizes of the same product, since the system will not be able to adjust unit prices accordingly.
Our primary goal is to put science into the hands of school kids. These prices are therefore optimized for class sets, assuming a regular class size of up to 32 students, working in small groups of 3 students each. To provide 2 polarizers to each of the eleven groups and 2 for you as teacher (or, if needed, as spare parts), the regular class set contains 24 polarizers.
By paying a bit more for a personal set, you help us to offer class sets at a lower price.
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Making stress visible
Twisting light
