this depends on the situation. normally all one would need is a thermal sensor in order to detect light
The light that our eyes can detect is known as visible light.
Yes, some bugs can detect infrared light.
eyes
Humans cannot detect infrared light because our eyes are only sensitive to a limited range of wavelengths, known as visible light. Infrared light has longer wavelengths than visible light, making it undetectable to our eyes. Specialized equipment, such as infrared cameras, is needed to detect and visualize infrared light.
sex
yes
With a ultraviolet light detector.
Compound eyes detect motion, and simple eyes detect light. or The compound eyes are used to "see". The simple eyes are used to detect light intensity.
There are two types of sensory receptors: rods and cones. Rods detect light, and cones detect shape.
They can detect both visible light and infrared radiation.
they are useful to detect any kind of light... they need to sense any kind of light because they can not survive in dry conditions and light dry their skin. that is why they sense the light and run away from it to prevent their body from drying... hope that helps!
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