Note that the Orientation Slice is cut precisely to the (100) before the crystal is rotated and cut at either +.25 degrees and toward the flat, or â.25 degrees and away from the flat (as described in Figure 3).
The era was called the Dark Ages also because we don't have a lot of written sources from that time period, especially from the early part of the dark ages (500 to 800 CE).
The Greek Dark Ages Mycenaean civilization collapsed between 1200 and 1100 BC. From this time until the beginning of classical Greek civilization around 800 BC, Greece is considered to have entered a dark age. Writing and other evidence becomes very scarce. The period has come to be called the âGreek Dark Agesâ because this lack of evidence has meant that scholars can know little for sure about what went on in Greece during the period.