Stealth technology

military technology to make personnel and materiel less visible

The PL-01 was a Polish light tank concept created by OBRUM with support from BAE Systems, based on the Swedish CV90120-T light tank. The concept vehicle was first unveiled at the International Defence Industry Exhibition in Kielce on 2 September 2013, but the project was scrapped in 2015.

theoretical device to render objects invisible

Spherically symmetric gradient-index lens

Wikimedia template

sonar reducing and sound altering tiles

proposed aircraft stealth technology using ionized gas to reduce the radar cross-section of an aircraft

Device to reduce noise produced by aircraft jet engines

appearance of objects to infrared sensors