The guy in the video makes too many assumptions for my taste. Not all the videos from the moon missions were erased either, they were pretty much scattered around Kennedy, and have been found. There are some old timers there working to digitize those videos. In an abandoned McDonalds of all places. They found tape machines to view them and NASA is doing all it can to help and locate more.
Putting aside the "assumptions" Your thoughts on the rings like a bell would be welcome. I only ask for the meteor data does not match the vehicle/s impact data. I have my thoughts and far as a mass density thing as far explanation but cannot compute the reversal of a "reverb" with more on a lighter item.
It's not the "sound" they were talking about. As we all know you can't hear in space, because of the lack of air for sound waves to propagate through. It was only said as a comparison. So it didn't actually sound like a bell. They were saying that because of the time it reverberated. Consider the earth is much harder, and yet no one here says it rings like a bell, but yet in those terms, it does. Harder it is, the more it will allow waves to flow through. Which is why recording studios use foam as sound proofing. This is why sheet rock bounces less sound waves than say concrete. In a concrete room, the sound bounces back easily, less with sheet rock, and even less with foam over the sheet rock. Some seismic methods use an impact of some sort, like dynamite etc... that shock wave could be called sound, but in reality it's more of an impact, like a hammer hitting a piece of steel. Sure it sounds like it's ringing, but it's just the shock wave. In the end, I believe it was just a term they used to help describe what the seismic data was showing. Then conspiracy people jumped on the term to mean it's probably a spaceship. There's a ton of dis-information floating around on the web, tread lightly LOL
Are you suggesting there is no sound recording devices on the Moon for it would be pointless? Or so they would like one to believe? I get the Seismic monitors and perhaps the wave propagation being similar as a bells would be. Yes the Moon has a very thin atmosphere as you know. Less O2 than other gasses. which makes me believe one may be able to pic up the slightest sound. I have now proof of that. But If the right detectors were in fact on the Moon when the two intentional crashes and the Meteor yes sound may have been picked up just of what the Moon consists/make up of.
I suppose, if you bury your head/helmet deep enough into the lunar surface, you could hear the sounds these impacts put out. But standing next to one? Meh, not so much LOL. If their radio's had failed on the moon, they would have been left with talking/yelling at each through touching helmets. You're not going to be an Ostrich on the moon are ya? You'll get all that nasty lunar dust all in your helmet. LOL
But we were on the inner part of the Moon. which you agree is acoustic. It seismic waves show like a bell, After this re pore it could actually Have ringed like a bell. The tree falling in the wood theory may not be true at this point. Have shown electric surrounding with electrostatic item interacting? Not sure I believe sound could be heard it the right situations.
The atmosphere is SO THIN on the moon, I doubt you could hear it through a helmet. I wasn't trying to be snarky. But rather realistic. While a tree falling in the wood would make a sound. One falling on the moons surface wouldn't, except maybe by vibrations picked up by a seismic meter. Only because of the vibration of the ground. But it can't make a sound that would travel more than 1mm at best. The molecules of the moons atmosphere are so sparse, what would the sound vibrate onto? The inner part of the moon acoustic? I think more like vibration of lunar soil vs sound waves in some thin atmosphere. I mean, if you put sand in a tub, and smack it real hard, it's going to vibrate some of the rest of the sand right? Same thing here, there's no sound involved, just shaking of sand. Or impacts of sand on sand. But to say it makes a sound requires air does it not? I mean, that's what sound is right? Air molecules vibrating. I mean I play guitar, but would my amp make a sound on the moon? Nope. If you held your helmet to the amp, it would send vibrations through the helmet, and the air in the helmet would make a sound. But only from the vibration of the speaker movement, not from the non-existent sound waves coming off it. Does this make sense?
Without a thick enough atmosphere you can't do this.