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Q121
(CISF/2017)
Science & Technology › Space & Defence Technology
Through the X-BIS Screen, explosives are seen in
Explanation
X-ray Baggage Inspection Systems (X-BIS) utilize dual-energy X-ray technology to categorize materials based on their effective atomic number (Z-number). The system assigns specific colors to different material groups to assist security operators:
- Orange: Represents organic materials (low atomic number, typically Z < 10). This includes paper, textiles, plastics, and most explosives (which are nitrogen-rich organic compounds like TNT or RDX).
- Green: Represents inorganic materials or light metals (medium atomic number, Z between 10 and 15), such as aluminum, silicon, and glass.
- Blue/Black: Represents dense metallic materials (high atomic number, Z > 15), such as iron, steel, and copper.
- Opaque/Dark Black: Indicates items too dense for X-rays to penetrate, such as lead.
Because explosives are organic in nature, they are displayed in orange on the X-BIS monitor.
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SIMILAR QUESTIONS
X-BIS at airports distinguishes different materials according to their atomic weights which are displayed in different colours. In this regard, which one among the following is not properly matched ?
When a beam of white light passes through a glass prism, the colour of light beam that deviates the least is
What is the full form of X-BIS ?
Which one of the following is the full form of X-BIS ?