====== Water Lens ======

{{tag>Water Lens needs_review untagged unlocated}}

<WRAP box right>
{{Water_Lens_5.jpg?400|}}

// //
</WRAP>

===== Description =====

Varying the amount of water inside a "lens" to model the behaviour of human eyes





===== Purpose =====



===== Apparatus =====


1. Water Lens with a closed syringe attached 
2. A thin glass lens to demonstrate human "wearing glass". 
3. A projector with variable focusing ability (Just a focus lens tube attach to a light source) 
4. Some image/diagrams to project. 

Please refer to the images below for setup. 

Operation: 
- Attach an image between the light source and the focus lens tube (i.e: tape on to the focus lens tube) 
- "~45 mL" on the syringe is a concave blur projection of the image, which can be sharpen in two ways: 
1. Use the thin glass lens after the water lens, since the glass lens is convex lens 
2. Pump water from the syringe into the water lens to about "~10 mL" left in the syringe. 

***

===== Setup =====



===== Notes =====

You have to provide your own image to display.    Updated on: Dec 07, 2013

<WRAP group>
<WRAP half column>

</WRAP>
<WRAP half column>

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<WRAP box>
<WRAP centeralign> // Demo room information // 
</WRAP>
<WRAP tablewidth 100%>
| **Location** | ---- |
| **Maker** | Unknown |
| **Current State** | Working |
</WRAP>
</WRAP>