The term visible radiation is identified in base64 scheme by the sequence dmlzaWJsZSByYWRpYXRpb24=, while the MD5 signature is equal to 8b4da775ef9ea9619f4a4ce5ff2a1a7c. The ASCII encoding of visible radiation in hexadecimal notation is 76697369626c6520726164696174696f6e.