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Guest Hans Gruber

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Guest ezkerraldean

1. Tidal Correction Readings need to be corrected for the effect of the sun and the moon on the earth’s gravity field. These corrections are obtained from published tables. These corrections must be applied before any others, particularly as they could be mistaken for instrument drift.

 

2. Drift correction Gravimeters drift due to changes in temperature, and handling. The drift correction is usually a linear correction (in mGal or g.u./hour – see practical 1) deduced from variations in the base station reading.

 

3. Latitude Correction Gravity varies over the Earth’s surface as given by the international gravity formula. The correction is made by removing the value given by the IGF from the observed value. If the data are not referenced to the IGF they can be corrected using the approximate N-S gravity gradient given by 8.12sin2 g.u./km. Where  is latitude. Gravity is less at the equator than at the poles.

 

4. Eotvos Correction Only applicable if data are collected onboard a moving ship or other vehicle, the Eotvos correction EC in g.u. is given by:

 

 

 

Where V is the velocity of the vehicle, α is the vehicle heading and φ is the latitude of the observation.

 

5. Free-Air correction This corrects for the height of the gravimeter above sea level. The IGRF gives gravity at sea level, so for data referenced to the IGF a correction has to be made which compensates for the fact that the gravimeter is further from the Earth’s centre of mass and thus the gravitational attraction is less. Consequently this is a positive correction of 3.086 g.u./m.

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Guest abracadabra

The core of his music is based on household sounds that clink and clank as well as his lullaby singing. This is not an album but an EP with fillers of unfinished or short instrumental songs. Low end frequencies are extremely rare, lots of echo and reverb give the overall shoe gazer effect, and the words are hard to make out even for me. The impression I get is of live auditions at a coffee shop or of campfire melodies.

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I shot a moose, once. I was hunting up-state New York, and I shot a moose, and I strap him on to the fender of my car, and I'm driving home along the west side highway, but what I didn't realize was, that the bullet did not penetrate the moose. It just creased the scalp, knocking him unconscious. And I'm driving through the Holland tunnel - the moose woke up. So I'm driving with a live moose on my fender. The moose is signaling for a turn, y'know. There's a law in New York state against driving with a conscious moose on your fender, tuesday, thursday and saturday. And I'm very panicky, and then it hits me: some friends of mine is having a costume party. I'll go, I'll take the moose, I'll ditch him at the party. It wouldn't be my responsibillity.

 

So I drive up to the party and I knock on the door. The moose is next to me. My host comes to the door. I say "Hello. You know the Solomons". We enter. The moose mingles. Did very well. Scored. Two guys were trying to sell him insurance for an hour and a half. Twelve o'clock comes - they give out prices for the best costume of the night. First price goes to the Burcowiches, a maried couple dressed as a moose. The moose comes in second. The moose is furious. He and the Burcowiches lock antlers in the living room. They knock each other unconscious. Now, I figured, is my chance. I grab the moose, strap him onto my fender, and shoot back to the roads, but - I got the Burcowiches. So I'm driving along with two jewish people on my fender, and there's a law in New York State ... tuesdays, thursdays and especially saturday.

 

The following morning the Burcowiches wake up in the woods, in a moose suit. Mr. Burcowich is shot, stuffed and mounted - at the New York Athletic Club, and the joke is on them, because it's restricted.

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The End Credits

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