NVG

What is NVG

• NVG is light image intensification device that amplifies the night ambient illuminated scenes
• NVG is light image intensification device that amplifies the daylight illuminated scenes
• NVG is light image intensification device that amplifies the infrard energy.

NVG is light image intensification device that amplifies the night ambient illuminated scenes

• Yes
• No

NVG is device that detects infrared energy (heat) and converts it into an electronic signal, which is then processed to produce a thermal image

• Yes
• No

Photocathode

• Phototube that is coated with a photosensitive compound. When this is struck by a photon, the absorbed energy causes electron emission due to the photoelectric effect.
• Phototube that is coated with a photosensitive compound. When this is struck by a electron, the absorbed energy causes photon emission due to the photoelectric effect.

Phototube that is coated with a photosensitive compound. When this is struck by a photon, the absorbed energy causes electron emission due to the photoelectric effect is called?

• Anode
• Photocatode
• Catode

Type of elementary particle, the electromagnetic field with wavelenght the human eye can see – light?

• Electron
• Neutron
• Photon

What is photon?

• Type of elementary particle, the electromagnetic field with wavelenght the human eye can see – light.
• Type of elementary particle, the electromagnetic field with wavelenght the human eye can´t see.

Sun light reflected by moon and radiated back to the Earth is called?

• Solar illumination
• Star illumination
• Lunar illumination

The ratio of the intensity of light reflected from an object, such as a planet, to that of the light it receives from the sun

• Albedo
• Obscure
• Monochrome light

End of the nautical twilight occurs?

• When the sun has dropped 6 degrees below the western horizon.
• When the sun has dropped 12 degrees below the western horizon.
• When the sun has dropped 18 degrees below the western horizon.