X-ray
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X-ray electromagnetic spectrum ke ek hissa hae, jiske frequency ultraviolet radiation se jaada hae. Ii solid materials ke aar paar jaawe sake hae. X-rays ke ek metal ke ek fast-moving electrons se daage se banawa jaawe sake hae.
X-ray photography ke medicine me haddi aur cancer ke dekhe me kaam me lawa jaawe hae.