Images used in this section:

Source: 30 degree kaleidoscope image, Koperczak, Wikimedia Commons

Source: submarine-submersible-water-2030658, JanBaby, pixabay.com

Source: diagnostics-stethoscope-doctor-161140, OpenClipart-Vectors, pixabay.com

Source: Imagem paint Termoscópio.png, Rpe19, Wikimedia Commons

Source: Acrophobia logo roto drop at Six Flags Over Georgia, USA, Jeremy Gunther Heinz Jahnick