https://diler.tube/videos/watch/f097478e-5a2b-4003-b960-bde631758db1 Huygen's proposed that light is a longitudinal wave in the aether medium - a medium that pervades the entire universe. The set of particles oscillating in phase with each other is called a wavefront. Point sources give out spherical wavefronts, while sources at infinity give plane wavefronts. Mon, 05 Oct 2026 13:02:54 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://diler.tube https://diler.tube/lazy-static/avatars/f58b270a-6076-478a-ad43-3888a532ecb4.png https://diler.tube/videos/watch/f097478e-5a2b-4003-b960-bde631758db1 All rights reserved, unless otherwise specified in the terms specified at https://diler.tube/about and potential licenses granted by each content's rightholder.