![]() Edison received $10,000 for the manufacturing and sales rights and 20% of the profits. The Edison Speaking Phonograph Company was established on January 24, 1878, to exploit the new machine by exhibiting it. Edison recently came into this office, placed a little machine on our desk, turned a crank, and the machine inquired as to our health, asked how we liked the phonograph, informed us that it was very well, and bid us a cordial good night." Interest was great, and the invention was reported in several New York newspapers, and later in other American newspapers and magazines. As the December 22, 1877, issue reported, "Mr. Department of the Interior, National Park Service, Edison National Historic Site.Įdison took his new invention to the offices of Scientific American in New York City and showed it to staff there. There were some differences, however, between the two men's ideas, and Cros's work remained only a theory, since he did not produce a working model of it. The only other recorded evidence of such an invention was in a paper by French scientist Charles Cros, written on April 18, 1877. ![]() The patent on the phonograph was issued on February 19, 1878. Also, the diary of one of Edison's aides, Charles Batchelor, seems to confirm that the phonograph was not constructed until December 4, and finished two days later. Edison immediately tested the machine by speaking the nursery rhyme into the mouthpiece, "Mary had a little lamb." To his amazement, the machine played his words back to him.Īlthough it was later stated that the date for this event was on August 12, 1877, some historians believe that it probably happened several months later, since Edison did not file for a patent until December 24, 1877. Edison gave a sketch of the machine to his mechanic, John Kruesi, to build, which Kruesi supposedly did within 30 hours. When one would speak into a mouthpiece, the sound vibrations would be indented onto the cylinder by the recording needle in a vertical (or hill and dale) groove pattern. The machine had two diaphragm-and-needle units, one for recording, and one for playback. Edison later changed the paper to a metal cylinder with tin foil wrapped around it. The speaking vibrations made indentations in the paper. He experimented with a diaphragm which had an embossing point and was held against rapidly-moving paraffin paper. This development led Edison to speculate that a telephone message could also be recorded in a similar fashion. In 1877, Edison was working on a machine that would transcribe telegraphic messages through indentations on paper tape, which could later be sent over the telegraph repeatedly. The phonograph was developed as a result of Thomas Edison's work on two other inventions, the telegraph and the telephone. Listen to this page History of the Cylinder Phonograph Phonograph Catalog/Advertisement: My current idea is Sort Ascending/Descending and grab the top and bottom 2000 items THEN use Min/Max ID numbers from these collections to build an array of 'missing IDs' which I use ForAll & Collect and loop through the missing IDs to collect those. Ie The above code only returns those items that meet the criteria from the first 2000 items (by ID ascending order). It apears from my testing that PAs creates a 2000 item instance before applying my filters, like the one above. I've just been ignoring it because it's SP. the blue line for me appears under 'Value' part of choiceCol.Value as well as under the '=' operator. ClearCollect( colM圜ol, Filter( mySPlist, choiceCol.Value = ) ) Maybe I'm wrong? Further digging into the docs I found Choice columns and '=' operator are delegatable to SP but I get the blue line when attempting this operationĮg. *** Edited to add a Concurrent function to make this load much yes I do get the blue line but I thought it was OK to ignore because my data source is Sharepoint as per this. *** Edited to add a Concurrent function to make this load much faster*** It just takes a bit of preloading first to get there. You should now be able to Filter your NameofCollection with all 15000 records. ![]() ![]() ClearCollect(NameofCollection,CollectionA,CollectionB,CollectionC,CollectionD,CollectionE,CollectionF,CollectionG,CollectionH) Powerapps just doesn't like dealing with all that data from an outside source, but temp storing within the browser works alright.ĬlearCollect(CollectionA,Filter(NameofTable,ID=2000 And ID=4000 And ID=6000 And ID=8000 And ID=10000 And ID=12000 And ID=14000 And ID<16000)) You could run a multiple collections to bring in the data in chunks of 2000, then group it into a larger collection.
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