Marine Optics: Dark Disguise

Marine Optics: Dark Disguise

Survival in the deep sea depends on seeing others without being seen yourself. A recent study examined two switchable camouflage strategies in cephalopods: transparency and dark pigmentation.

Biological Optics: Seeing Colours in the Dark

The intensity threshold of colour vision has been behaviourally tested in birds; the results show that parrots lose colour vision in brighter light than humans.

Dualism in Disguise

Voice disguise and automatic detection

This study focuses on the question of voice disguise and the problem of its detection. The voice disguise is considered as a deliberated action of the speaker who wants to falsify or to conceal his identity. Lots of possibilities are offered to a speaker to change his voice and to false a human ear or an automatic system. He could transform his voice by electronic scrambling or more simply by e...

Orthodontic Pain- Blessing with Disguise

Orthodontics is based on tooth movement through bone resulting from the application of mechanical forces. The bone remodeling takes place through an inflammatory process associated with pain or discomfort. Orthodontic pain is the most frequent complaint of the patients undergoing orthodontic therapy. The lengthy duration of treatment along with frequent pain due to the orthodontic appliances of...