File:0579 Campana vibrante con pendoli (mancanti).jpg
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Summary[edit]
Description0579 Campana vibrante con pendoli (mancanti).jpg |
Italiano: Acustica
Lo strumento è costituito da una campana in acciaio, la quale è sorretta da uno stelo fissato ad un treppiede in ghisa. Sulla sommità dello stelo è posizionato un sostegno, il quale dovrebbe essere a quattro bracci e al quale dovrebbero essere sospese altrettanti pendoli. Purtroppo oggi rimangono solamente due bracci senza alcun pendolo. Se si mette in vibrazione la campana con un colpo o un archetto di violino, si può osservare come i pendolini sobbalzino allontanandosi dalla campana. Si nota che l'ampiezza dello spostamento dipende dall'ampiezza della vibrazione. Da ciò si evince come tutti i corpi che generano un suono siano sede di movimenti vibratori, in essi si possono propagare onde elastiche. Se si varia la posizione dei pendoli allora si notano le caratteristiche geometriche della vibrazione, ovvero i nodi e i ventri, che corrispondono rispettivamente ai punti che non si discostano dalla posizione di equilibrio iniziale e a quelli in cui invece si raggiunge la massima ampiezza dell'oscillazione. |
Date | |
Source | Gabinetto Scientifico Perticari |
Author | Liceo Classico Perticari |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:33, 18 June 2019 | 2,761 × 4,147 (634 KB) | Sarapaol (talk | contribs) | User created page with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D700 |
Exposure time | 1/160 sec (0.00625) |
F-number | f/18 |
ISO speed rating | 200 |
Date and time of data generation | 17:20, 12 June 2019 |
Lens focal length | 52 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Windows Photo Editor 10.0.10011.16384 |
File change date and time | 16:25, 18 June 2019 |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 17:20, 12 June 2019 |
APEX shutter speed | 7.321928 |
APEX aperture | 8.33985 |
APEX exposure bias | 0 |
Maximum land aperture | 4.5 APEX (f/4.76) |
Metering mode | Center weighted average |
Light source | Unknown |
Flash | Flash did not fire |
DateTimeOriginal subseconds | 32 |
DateTimeDigitized subseconds | 32 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 52 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 2131530 |
Lens used | 24.0-120.0 mm f/3.5-5.6 |
Date metadata was last modified | 09:43, 13 June 2019 |
Unique ID of original document | B32621E40C9FE045ABF0C3D0B1FA864D |
IIM version | 4 |
Structured data
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12 June 2019
image/jpeg
8612a1858bb539f88a663a2fb141c9ac988f4451
649,570 byte
4,147 pixel
2,761 pixel
0.00625 second
18
52 millimetre
200
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