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TPO 14-6
Narrator
Listen to part of a lecture in anarcheology class.
Professor
When we think of large monumental structures built byearly societies, an Egyptian pyramid probably comes to mind, but there are someeven earlier structures in the British ialse[aisle]also worth discussing, and besides the well known circle of massive stones ofstone henge[Stonehenge], which, don’t get mewrong, is remarkable enough, well, other impressive Neolithic structures arefound there too. Oh yes, we are talking about the Neolithic period here, alsocall the new stone age, which was the time before stone tools began to bereplaced by tools made of bronze and other metals. It was about five thousandyears ago, even before the first Egyptian pyramid, that some amazing Neolithic monuments,tombs, were erected at various sites around Ireland, Great Britain, and coastalislands nearby. I’m referring in particular to structures that in some caseslook like ordinary natural hills, but were definitely built by humans, wellorganized communities of humans, to enclose a chamber, or room with stonewalls, and sometimes with a high, cleverly designed ceiling of overlappingstones. These structures are called passage graves, because the inner-chamber,sometimes several chambers in fact, could only be entered from the outsidethrough a narrow passage way.
Student
Excuse me, professor, but you said passagegraves, were these just monuments to honor the dead buried there, or were theydesigned to be used somehow by the living?
Professor
Ah, yes, good question, Michael. Besidesbeing built as tombs, some of these passage graves were definitely what memight call astronomical calendars, with chambers that were flooded withsunlight on certain special days of the year, which must have seem oracularand inspired a good deal of religious wonder. But research indicates that notjust light, but also the physics of sound helped enhance these religiousexperiences.
Student
How so?
Professor
Well, first the echoes. When the religiousleader started chanting with echoes bouncing off these stone walls over andover again, it must have seem like a whole chores[chorus]of other voices, spirits of Gods, maybe, joining in. But even more intriguingis what physicists call standing waves. Basically, the phenomenon of standingwaves occurs when sound waves of the same frequency reflect off the walls andmeet from opposite direction. So the volume seems to alternate between veryloud and very soft. You can stand quite near a man singing in a loud voice andhardly hear him, yet step a little further away and his voice is almost deafening.As you move around the chamber, the volume of the sound goes way up and waydown, depending on where you are in these standing waves.
And often the acoustics make it hard to identifywhere sounds are coming from, it’s as if powerful voices are speaking to you,or chanting from inside your own head. This had to engender a powerful sense of allin Neolithic worshipers.
And another bit of physics at play here issomething called resonates.I’m no physicist, but, well, I imagine you’ve all blown air over the top of anempty bottle and hear the sound it makes, and you’ve probably noticed thatdepending on its size, each empty bottle plays one particular musical note, oras a physicist might put it, each bottle resonates at a particular frequency.Well, that’s true of these chambers too, if you make a constant noise insidethe chamber, maybe by steadily beating a drum at a certain rate, a particularfrequency of sound or resonate will ring out intensely, depending on the sizeof the chamber. In some of the larger chambers, though, this intensify soundmay be too deep for us to hear. We can feel it, we are mysteriously agitated by it, but it’s not asound our ears can hear. The psychological affects of all these extraordinarysounds can be profound, especially when they seem so disconnected from thehuman doing drumming or chanting. And there can be observable physical affectson people too. In fact, the sounds can cause headaches, feelings of dizziness,increase heart rate, that sort of thing, you see. Anyway, what was experiencedinside one of these passage graves clearly could be far more intense than theeveryday reality outside, which made them very special places. But back youyour question, Michael, as to whether these graves were designed to be used bythe living, well, certainly with regard to astronomical or chemical function,that seems pretty obvious, and I want to go into more detail on that now. |
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