Duke University microwave cloak
🔬 Achieved by scienceMetamaterials routed microwaves around a copper cylinder — the first experimental ‘cloak’.
VerdictWorks only at a single frequency, in a 2D plane.
Source ↗
Invisibility
Vanishing from sight, radar or perception
Reality checkNo reliable case of a person turning invisible (the Philadelphia Experiment is legend); invisibility-cloak technology has existed since 2006 but works only for specific wavelengths.
Go to full archive →
The Philadelphia Experiment
✕ DebunkedAs in the Teleportation entry.
VerdictAn urban legend.
Source ↗
The ‘invisible gorilla’ experiment
🎓 Academic researchAbout half the viewers counting passes completely missed a gorilla-suited person walking through the middle — ‘attentional invisibility’.
VerdictAttention can make an object ‘disappear’; invisibility need not be optical.
Source ↗