Overview

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This tutorial quickly guides you through SPRAY. We will work on a simple example, namely the investigation of the throughput of radiation through a solid cylinder.

Start SPRAY and try to follow the steps described below. This is the fastest way to learn how to operate the program.

Here are the parts of this tutorial:

·	First you will practise some basic skills with a simple point light source and a screen

·	Then you will learn how to work with circular light sources and rendered views

·	The important concept of 'interfaces' is demonstrated

·	A cylinder is defined and covered with an interface, and a detector records the spectrum of the transmitted radiation

·	The cylinder is coated with an absorbing material, the detector records an ATR spectrum (attenuated total reflection)