Other visualisation techniques
Other photographic techniques for visualising the invisible include the use of polarising filters.
![part of a CD jewel case in polarised light](https://amazon.clikpic.com/invisibleimaging/images/CD_case_thumb.jpg)
part of a CD jewel case in polarised light
![Plastic knife and fork in polarised light](https://amazon.clikpic.com/invisibleimaging/images/knife_and_fork_thumb.jpg)
Plastic knife and fork in polarised light
![Plastic pot and lid in polarised light](https://amazon.clikpic.com/invisibleimaging/images/plastic_pot_thumb.jpg)
Plastic pot and lid in polarised light
![Plastic syringe in polarised light](https://amazon.clikpic.com/invisibleimaging/images/syringe_thumb.jpg)
Plastic syringe in polarised light
![X ray of Tiger LIly](https://amazon.clikpic.com/invisibleimaging/images/lily_thumb.jpg)
X ray of Tiger LIly
![X ray of Roses](https://amazon.clikpic.com/invisibleimaging/images/rose_thumb.jpg)
X ray of Roses
![X ray of Calla Lily](https://amazon.clikpic.com/invisibleimaging/images/Calla_thumb.jpg)
X ray of Calla Lily
![Sycamore (Acer pseudoplatanus) seed spiralling down from tree](https://amazon.clikpic.com/invisibleimaging/images/6_thumb._sycamore_.jpg)
Sycamore (Acer pseudoplatanus) seed spiralling down from tree
![mixture of soap and oil bubbles on surface of water, shot with cross polarised light](https://amazon.clikpic.com/invisibleimaging/images/bubbles_web_thumb.jpg)
mixture of soap and oil bubbles on surface of water, shot with cross polarised light
![Ice crystals, seen in cross polarised light](https://amazon.clikpic.com/invisibleimaging/images/ice_web_thumb.jpg)
Ice crystals, seen in cross polarised light
![Peacock Moss: Selaginella uncinata. Leaves shot at different angles to show iridescence](https://amazon.clikpic.com/invisibleimaging/images/selaginella_iridescence_web_thumb.jpg)
Peacock Moss: Selaginella uncinata. Leaves shot at different angles to show iridescence
![Blue Morpho butterfly (Morpho peleides) subject shot at different angles to show iridescence](https://amazon.clikpic.com/invisibleimaging/images/blue_morpho_iridescence_web_thumb.jpg)