Citat:
Nej, det är du som inte läser vad som står.Jasså, det står ju där i texten att uppföljningen talar emot det du skriver där och vad de själva skrev i rapporten.
Alltså svaret är inget svar. Kul va
Ps däremot är det väldans intressant det där med ultraljud, men vart fick de maskineriet och elektricitet ifrån att skapa vibrationer? : ))
Alltså svaret är inget svar. Kul va

Ps däremot är det väldans intressant det där med ultraljud, men vart fick de maskineriet och elektricitet ifrån att skapa vibrationer? : ))
Det som klart och tydligt står är att det är en dubbelspiral, inte en enskild spiral, därmed är det INTE 2.5mm mellan skårorna.
The distance between the grooves, which are scoured into the core along the entire length, was .040 - .080 inch. I was devastated that Petrie even got the distance between the grooves wrong! Any further measurement, I thought, would be just perfunctory. I couldn't support any theory of advanced machining if Petrie's dimensions of .100 inch feedrate cannot be verified!Vad han hittade var:
Det han hävdar att han hittade är märken som var varken cirklar eller en enskild spiral utan en dubbelspiral. Vilket gör att han därmed fortsätter hävda sina teorier om att detta måste vara bevis på ultraavancerade soniska maskinverktyg etc.
Petrie had described a single helical groove that had a pitch of .100 inch. What I was looking at was not a single helical groove, but two helical grooves. The thread wound around the core following the groove until it lay approximately .110 inch above the start of the thread. Amazingly, though, there was another groove that nestled neatly in between!
Och svaret han fick kvarstår:
http://www.ianlawton.com/gttextr1.html
At the time of writing we have been unable to substantiate whether or not these new elements of Dunn's analysis are sound. However, he had previously maintained that the primary aspect which made him consider ultrasound was the fact that the quartz was cut deeper than the surrounding feldspar, but in correspondence it is clear that he accepts Brownlee's suggestion that this may have been caused by ripping. Since his report adds nothing definitive on this subject, it remains unclear exactly what conclusions he draws from his new analysis, and indeed whether or not he believes it reinforces his suggestion that ultrasound was employed.Du kan få mer här:
http://www.margaretmorrisbooks.com/xcerpt07.html
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Massa fler borrkärnor, dock inga med spiralmärken av den typen som det snackas om.Then came the great question. Was the groove a helix or a horizontal ring around the core? I had deferred to Reid and Brownlee's assertions that they were horizontal and I was, at this juncture, painfully assured that it was the correct thing to do. It was Petrie's description of the helical groove that made Core #7 stand apart from modern cores. It was one of the principle characteristics upon which I based my theory of ultrasonic machining.
