4 ms·
Radio is very poor underwater. Especially deep water. Ultrasonic communication can be used, but probably not suitable for exploring the interior of a shipwreck
by HPsquared 4y ago
Radio is very poor underwater. Especially deep water. Ultrasonic communication can be used, but probably not suitable for exploring the interior of a shipwreck - probably needs line-of-sight to work properly.
- RC_ITR 4y agoThis is a very fun fact because it describes why we see the wavelengths that we do! Visible light is pretty much just the portion of the EM spectrum that is poorly absorbed by water [0] (and that is also produced by the sun and also poorly absorbed by atmosphere) If radio worked well in water (where eyes first evolved), then we would just "see" radio waves (except in practice the Sun doesn't make enough of them that reach Earth). [0] http://hyperphysics.phy-astr.gsu.edu/hbase/Chemical/watabs.html http://hyperphysics.phy-astr.gsu.edu/hbase/Chemical/watabs.h...
- mariosisters 4y agoWow this is so interesting, thank you for the link.
- kQq9oHeAz6wLLS 4y agoAlso, I imagine the tether comes in handy for recovery if there's a hardware failure on the ROV