Wednesday, September 26, 2012

Single Replacement reaction animation

Hello Everyone,

I am making animation of the single displacement reaction experiment. It's a school level experiment for Student of 6th to 8th standard.

This experiment is the reaction between Iron(Fe) and Copper Sulphate Solution (CuSO4).

In the experiment Iron nail is dropped in the solution of copper Sulphate in Beaker, after sometime when we remove the Iron nail from the solution the color of the nail changes to reddish orange color.
Experiment Setup
Preview in Cycles
Preview in Cycles

3D models which are used in this animation are available on Project OSCAR 3D model Repository.
http://oscar.iitb.ac.in/blenderrepository.do

I have append the 3D models in a new blend file.
I have used the Basic arrangement for the animation which contains a table and plane as back ground and a plane as emitter for the light source.
In animation I have done camera animation and key frame animation to move Iron nail.

Below is the final camera animation.

video

Final Render with 500 Samples

Thursday, September 6, 2012

Glass Objects in Cycles

Hello Everyone,

After doing some materials in cycles we thought now it should go fine.
A new problem came while doing glass material in cycles.
Amit has model Petri dish in Blender it was first render Blender Render engine.
Reference Image
Blender Render

But problem occur when he was doing material in cycles render engine.
The material looks like opaque glass.
Render Preview in Cycles
Render Preview in Cycles

The same problem had occurred earlier when I was doing Cycles material of Reagent bottle and cap.
That time I thought it was because of some error in  modeling and remodel the cap again and the problem solved.

Petri dish I checked the model again exported the models in other file deleted material than redone them again but the output was same.

But when I was learning Blender back 2009 that time I had one problem regarding face normal and how it can be solved by doing Ctrl + N key to realigned all the normals in one general direction.
And this did the trick.
After the correction
Final render after correction

The vertex normals and face normals decide how the direction of lights fall upon the face and how the surface material reacts to the light rays.
Its basic of the class 10th science. about ray refection and refraction when light rays hits a surface.