What looks like magic is often just a rule of physics or chemistry doing its job. Invisible ink turning brown, colours swirling on milk, water climbing uphill — it all feels like sorcery until you ...

Massachusetts Institute of Technology researchers devised an alternative method to EHRs: an invisible dye that injects the patient’s immunization medical records into the skin, according to a Dec. 18 ...

The science pros at TKOR show how invisible ink can be made and revealed.