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Post by Chicago Astronomer Joe on Sept 13, 2012 10:09:04 GMT -6
Blow it out your rain hole!
"The walls of the Pantheon's dome, are 20 feet thick at the base and only five feet thick at the oculus or eye at the top of the dome. The Roman engineers cleverly embedded lighter materials in the upper sections of the dome to reduce weight, and used the multi-row arrangement of waffle-like coffers for the same purpose. Until the 19th century no dome was larger, and the Pantheon's dome still remains the world's largest unreinforced concrete dome.
The Oculus in the Pantheon, Rome, has always been open to the weather, allowing rain to enter and fall to the floor, where it is carried away through drains. In the picture, right, sunlight streams through the opening and strikes the lower part of the dome. The bright opening and the surrounding smooth concrete above the coffering resembles an eye, giving the opening its name."
Very Coolest Patrick.
Chicago Astronomer Joe Founder, Administrator and Chief Astronomer
Telescope/Observatory Docent Facilitator Adler Planetarium & Astronomy Museum
Astronomy Instructor Instituto Del Progresso/IHSCA
Astronomy Program Instructor British International School of Chicago /Lincoln Park Campus
Resident Astronomer Chicago Park District Nature Oasis/Night Out in the Parks/ 606 Trail
Pantheon is now my favorite building, or at least tied with the Parthenon in Athens. We even went back to it on Wednesday just to hang out there and soak up the vibe.
The building is huge. Though it looks small, the oculus is 27' across and the extended dome would create a perfect sphere that would just touch the ground.
On Pentacost, firefighters climb up there and drop rose petals through the oculus at the end of the service to represent the flames that danced on the Apostles heads. What a trip that would be, however you feel about Christianity. And it's firefighters because they're the only ones who can get up there safely.
On summer solstice, the light from the oculus supposedly shines through the front door.
Pantheon is almost perfectly preserved because it was converted into a church and was thus saved from recycling of materials. Though it is a church, it does not feel churchy. It feels like the Pantheon. It gave me the same feeling of smallness as deep space astronomy.
Nice pictures. I wish I knew another language so I could travel more...
I speak not a word of Italian! Being Italy, it is full of tourists. It is expected. Most museum signage in Italian and English. Copious English language tour guides. Not being America, most people (under 70) speak multiple languages. Rick Steves. No excuse!
Last Edit: Sept 21, 2012 9:55:08 GMT -6 by patrickm
Well I'm off to the Super Boats International Offshore Race in Key West next month - www.superboat.com Then back to Turks and Caicos for a stay on Middle Caicos for a while in January - goo.gl/maps/6zd5N
Only tangentially astronomical, but have recently discovered Jack Dangers (Meat Beat Manifesto) "Music for Planetarium," which was commissioned for the opening of the new T*T Planetarium in Budapest. Anybody familiar with his other, more aggressive and awesome electronica will be confused by this, but anybody who loves Eno's Ambient albums--especially the darker timbre of "Apollo," the creepy industrial stylings of Lustmord, the post-metal work of Mick Harris, the "Alien" soundtrack, or the music you hear waiting in line for Space Mountain, will dig this album. Would be a fine addition to Joe's scope time music.
Post by Chicago Astronomer Joe on Nov 27, 2012 17:41:49 GMT -6
"Would be a fine addition to Joe's scope time music"
I like nice ethereal ambiance during Chicago Astronomer Star Parties...our visitors like it too. I'll check his work out.
(Side note: Years ago, I requested a Computer from the Adler to use during our observation sessions on Adler After Dark activities. After a long time, they provided me one and what I wanted to do was to play some ambiance music whilst displaying planetarium programs..which I did. But one evening, I was looking thru Youtube ambiance selections ...and the coordinator at the time went nutso - thinking I was goofing around and said that this wasn't what the computer was for. So, screw it...I never again made the effort nor used the machine.
Heresy. You are hereby condemned to burn at the stake. There are only five stars in the sky.
Which 5 are they, Paulie?
Come out to my brother's cottage at Turner Camp on the Fox River during the warm half of the year. It may not be quite like the mid-Pacific Ocean, but it's relatively nearby and presents a marvelous view of the heavens. There are no streetlights, so remember to bring a flashlight.