Monday, November 02, 2009

Changes in the Forest


Today I hiked out on Bricker Trail in the Michaux Forest near campus with a class learning how to use GPS.

The Penn National development is continuing its expansion along the forest boundary, although it is slower now because of the economic downturn. There are many vacant lots ready along the roads. The new homeowners are getting a fabulous view of the hills behind them and great access to hiking trails in the forest.

However, it will change the character of the forest. No one wants to see a timber harvesting operation behind their home. And hunters will be forced back from the forest boundary as the homes are built. I guess that's progress?

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Sunday, November 01, 2009

Unexpected Sitar

Last night we went to a Halloween party. The host, Jim, makes instruments (guitars, harps, dulcimers, etc.) from wood. Usually there is a mini-jam session after dinner. The music varies from year to year depending on the guests. Last night I was surprised to hear a sitar, the Indian lute. Jeff, the person who brought it, has been studying for over a year. So far he has learned two songs, I think, from the repertoir. The instrument has so many sounds and nuances that it's like an orchestra all to itself.

Wikipedia describes how the sitar is able to produce the sounds and overtones:

The sitar's curved frets are movable, allowing fine tuning, and raised so that sympathetic strings (tarbs, also known as "tarif" or "tarifdar") can run underneath them. A sitar can have 21, 22 or 23 strings, among them six or seven played strings which run over the frets: the Gandhar-pancham sitar (used by Vilayat Khan and his disciples) has six playable strings, whereas the Kharaj-pancham sitar, used in the Maihaar gharana (Ravi Shankar), has seven. Three of these (or four on a Kharaj-pancham sitar), called the chikari, simply provide a drone: the rest are used to play the melody, though the first string (baj tar) is most used.

The instrument has two bridges; the large bridge (bada goraj) for the playing and drone strings and the small bridge (chota goraj) for the sympathetic strings. Its timbre results from the way the strings interact with the wide, sloping bridge. As a string reverberates its length changes slightly as its edge touches the bridge, promoting the creation of overtones and giving the sound its distinctive, tone. The maintenance of this specific tone by shaping the bridge is called jawari. Many musicians rely on instrument makers to adjust this.

We only heard it played for a few enchanting minutes. I am tempted to look up music from Ravi Shankar and find music from other masters. Would it be enjoyable to listen to for a whole CD?

Friday, October 30, 2009

Visiting a park on a dreary day

It's been overcast all day with rain threatening. I decided this afternoon to visit the nearby Caledonia State Park. The foliage has passed, but there are still some beautiful scenes at this pond along the Thaddeus Stevens Historic Trail. I was looking to capture the reflections of the trees in the still pond. I was drawn to the geometric forms of the downed tree and the intensely green grass at the edge of the water.



Surprisingly the same scene is also on Google Maps and you can drive up the road.


View Larger Map

Blog publish 10/31/2009


Posted from Diigo. The rest of my favorite links are here.

Friday, October 09, 2009

Test of Google Earth Tours

This was made using the place marks from my Aerial Photos field lab. No sound in this version.

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