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Terahertz vs X-ray | Difference between Terahertz and X-ray

This page compares Terahertz vs X-ray and mentions difference between Terahertz and X-ray.

Introduction: Both Terahertz (THz) and X-ray fall under EM spectrum. Both are used for unique applications. Though they have some similarities, there are differences too as outlined below.

Terahertz vs X-ray

Let us derive comparison between these three frequencies based on various parameters such as frequency, wavelength, radiation, photon energy, advantages, disadvantages and their respective applications.

Difference between Terahertz and X-ray

Following table mentions difference between Terahertz and X-ray.

Features Terahertz X-ray
• Frequency range Lower than X-ray, 0.1 to 10 THz (1 THz equals 1 x 1012 Hz) Higher than Terahertz, 30 Petahertz to 30 Exahertz (i.e. 3 x 1016 to 3 x 1019)
• Radiation type Non-ionizing Ionizing
• Photon energy Low High
• Wavelength Lower Higher
• Advantages • Easily pass through non-conducting material• Higher bandwidth• Minimum effects on human body • Not absorbed very much by air• Diagnose tumours without the need of surgery•  used by radiologists to identify cracks• to identify abnormal bones etc.
• Disadvantages • It can not penetrate liquid water or metal • does not support long range communication due to atmospheric loss • Causes ionization and hence it often leads to cancer• Bones block significant diagnostic data as it absorbs radiation
• Detection of organic materials and their classes Possible using THz imaging Not possible using X-ray imaging

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