#astronomicalunit - Twitter Hashtag

6 months ago

His gun camera worked with two separate slotted disks. One disk was stationary and had one slot. The other had 12 slots and required 72 seconds to revolve once. The images’ quality was insufficient to precisely calculate the #AstronomicalUnit, and visual observations proved more reliable. A 2005 study suggested that surviving plates, such as those at Royal Museums #Greenwich, are likely practice shots using a model, with no confirmed surviving plates from the actual transit. Janssen presented the revolver to the Société Française de Photographie in 1875 and the Académie des Sciences in 1876, suggesting its use for studying rapid movements, like bird flight. His work inspired British expeditions, which used similar Janssen devices, and laid groundwork for motion picture technology.

RealPreCinema's tweet photo. His gun camera worked with two separate slotted disks. One disk was stationary and had one slot. The other had 12 slots and required 72 seconds to revolve once. The images’ quality was insufficient to precisely calculate the #AstronomicalUnit, and visual observations proved more reliable.

A 2005 study suggested that surviving plates, such as those at Royal Museums #Greenwich, are likely practice shots using a model, with no confirmed surviving plates from the actual transit.

Janssen presented the revolver to the Société Française de Photographie in 1875 and the Académie des Sciences in 1876, suggesting its use for studying rapid movements, like bird flight.

His work inspired British expeditions, which used similar Janssen devices, and laid groundwork for motion picture technology.

Pre Cinema History 📷🎞️🇨🇦 🏴󠁧󠁢󠁳󠁣󠁴󠁿

@RealPreCinema

6 months ago

Janssen led a team to #Nagasaki, Japan, with two members observing from #Kobe. The French government supported the expedition, one of over 60 global missions to observe the transit. Despite intermittent cloud cover, Janssen reported success in capturing images. The #PhotographicRevolver is recognized as the first practical device for sequential photography, influencing later Chronophotographic work by figures like Étienne-Jules Marey, who adapted it for studying animal motion. It’s often cited as an embryonic form of the movie camera, though Janssen’s intent was scientific, not cinematic. Below, Janssen is seated in the centre.

RealPreCinema's tweet photo. Janssen led a team to #Nagasaki, Japan, with two members observing from #Kobe. The French government supported the expedition, one of over 60 global missions to observe the transit. Despite intermittent cloud cover, Janssen reported success in capturing images.

The #PhotographicRevolver is recognized as the first practical device for sequential photography, influencing later Chronophotographic work by figures like Étienne-Jules Marey, who adapted it for studying animal motion. It’s often cited as an embryonic form of the movie camera, though Janssen’s intent was scientific, not cinematic.

Below, Janssen is seated in the centre.

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GNTTV

@GoodNewsToday

over 1 year ago

ग्रहों की चाल पर वैज्ञानिकों की नज़र, अंतरिक्ष में 7 ग्रहों के अनोखा मेल #ChaiParCharcha #Scientist #Space #AstronomicalUnit @shwetajhaanchor @GunjandixitJN @guptakhushi08 @deepikasharmaAT

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Jim Z @hometheater_z

about 4 years ago

#StarTrekTheMotionPicture #TheDirectorsEdition I'm sorry, but V'Ger is shaped like this and is 82 AU in diameter - larger than the solar system. #AstronomicalUnit https://t.co/rSKyNJxfbm