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The Wi-Peep sends several messages to a device as it flies and then measures the response time on each, enabling it to identify the device's location to within a metre. A research team based out of the University of Waterloo has developed a drone-powered device that can use WiFi networks to see through walls. The device, nicknamed Wi-Peep, can fly near a building and then use the inhabitants' WiFi network to identify and locate all WiFi-enabled devices inside in a matter of seconds. [Extracted from the article]

The article reports that award-winning sculptor Sir Anish Kapoor is set to debut his collection of Vantablack paintings, known for absorbing of visible light, at the Union Gallery in New York, showcasing the darkest man-made substance.

The article focuses on the importance of considering multiple factors when recommending sunscreens to patients. It discusses that these factors include the patient's skin type; risk for burning or tanning; underlying skin disorders; medications they are taking; lifestyle choices; and sun exposure levels; and also highlights the need for tailored recommendations for patients with different skin tones and the use of tinted sunscreens to protect against visible light and Ultraviolet A1 (UVA1).

The article offers information about infrared photography. Topics mention including the infrared light which can be found at the red end of the visible spectrum, benefits of trick cameras and filters in photography using the sensors and effect of conversions and filters that makes the cameras insensitive.

The article discusses research into visible light positioning (VLP), an indoor positioning system similar to global positioning systems (GPS) used outdoors, that uses light-emitting diode (LED) lights. Information is provided on research by Jean Armstrong of Monash University in the use of visible light as a data transmission medium

The article discusses the work of researchers at Monash University, the University of Maryland, and the U.S. Naval Research Laboratory who used graphene, a sheet of pure carbon to developed a light detector capable of observing a range of wavelengths 100 times larger than the visible spectrum.