Showing posts with label rock. Show all posts
Showing posts with label rock. Show all posts

Thursday, April 6, 2023

Apr 6 2023 - Really Weird Rocks

 

I checked into the good news network and found an article on weird floating rocks.  I seemed to have lost the original video which was very commercial yet fascinating with its pictures of precariously balanced massive stones.

The  one I looked up is the famous Japanese floating rock - it isn't actually floating, but it is an arresting sight.  

"The Ishi-no-Hōden is made from tuff and is surrounded on three sides by unprocessed bedrock. With a weight estimated at 500 tons, it measures 6.4 meters wide by 5.7 meters high by 7.2 meters in thickness. In shape, it is carved in the form of two flat rectangular parallelepipeds oriented vertically and sandwiching a small rectangular parallelepiped. One of the sides has a protrusion shaped like the top of a pyramid. The space between the surrounding bedrock and the megalith is wide enough for one adult to pass through, and it is possible to go around (admission fee is required). The monolith is situated in a large depression, which forms a pond at its base. The monolith is carved with a pillar at the center of its base, which is not visible at eye-level, so the monolith appears to be floating above the pond."



Here are two of the internet pictures. This is the best-known megalith in Japan although they have numerous strange rock formations above ground and below the sea.
 


Here's our own experience with the Balancing Rock at Garden of the Gods in Colorado.
 
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Tuesday, April 28, 2020

April 28 2020 - Sunset Ride

The earliest written words are 3400-3100 BC and the earliest coherent texts about 2600 BC. The earliest form of musical notation found is about 1400 BC. It contains fragmentary instructions for performing music.  It is music composed in harmonies of thirds. 

The scholar and music theorist Isidore of Seville, while writing in the early 7th century, considered that "unless sounds are held by the memory of man, they perish, because they cannot be written down."

But they were written by the 9th century to capture the Gregorian chant sung in monasteries. The earliest is about 850. Notation developed fine for melody, but took longer for rhythm - and in the 13th-century a treatise explains a set of six rhythmic modes in use at the time.  The pictures of early music notation show blocks rather than our current ovals.   I quite liked the blocks and yet am equally attracted to ovals.  I find musical notation visually pleasing without knowing what the song is.  That certainly isn't the case with mathematical notation which seems visually dense.  I guess it doesn't have rhythm portrayed.

So our pictures today are an appreciation of the great rock face on the train layout in Sacramento.  The first image has the sky replacement so that sky and rock seem to meld together.  It is as thought the sky is flowing into the rock and down the cliff. In the second you can see how amazing the colours and details are.  Such an artist - it seems too bad he wasn't creating sculptures rather than sides of hills.
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