W pliku      src/MyDetectorConstruction.cc    (zmiany kolorem czerwonym)
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void MyDetectorConstruction::DefineMaterials()
{
  G4String symbol;
  G4double a, z, density;
  G4int ncomponents;
  G4double fractionmass;
                                     
  // Define simple materials         
  // Define beryllium, silicon and iron
 
  new G4Material("Beryllium", z=4.,  a=9.012182*g/mole, density=1.8480*g/cm3);
  new G4Material("Silicon",   z=14., a=28.0855*g/mole,  density=2.330*g/cm3);
  new G4Material("Iron",      z=26., a=55.845*g/mole,   density=7.87*g/cm3);

  new G4Material("Titanium",  z=22., a=47.90*g/mole,    density=4.540*g/cm3);
 
  // Define elements
  G4Element* N = new G4Element("Nitrogen", symbol="N", z=7., a=14.01*g/mole);
  G4Element* O = new G4Element("Oxygen",   symbol="O", z=8., a=16.00*g/mole);
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