File:Ground to air signaling - no.jpg
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editDescriptionGround to air signaling - no.jpg |
Italiano: Per comunicare con un elicottero a vista le persone a terra devono alzare entrambe le braccia - in modo da rassomigliare ad una lettera Y (yes, sì in lingua inglese) - per indicare "Sì, abbiamo bisogno di aiuto", oppure alzare un braccio ed abbassare l'altro - in modo da rassomigliare ad una lettera N per significare "no" - ovvero "Non necessitiamo di aiuto". Questo è particolarmente importante per l'equipaggio dell'elicottero in quanto può rapidamente distinguere le persone in difficoltà da altri gruppi presenti nella zona.
English: To communicate with a helicopter in sight, raise both arms (forming the letter Y) to indicate "Yes" or "I need help," or stretch one arm up and one down (imitating the letter N) for "No" or "I do not need help". If semaphore flags are available, they can possibly be used to communicate with rescuers. This is important if the helicopter is searching for a missing party to avoid confusion. |
Date | |
Source | Nicola Vähätalo |
Author | Nicola Vähätalo |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:50, 5 February 2021 | 2,736 × 3,648 (1.43 MB) | Jacopo (talk | contribs) | Uploaded a work by Nicola Vähätalo from Nicola Vähätalo with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon DIGITAL IXUS 90 IS |
Exposure time | 1/1,250 sec (0.0008) |
F-number | f/4.5 |
ISO speed rating | 80 |
Date and time of data generation | 10:39, 15 June 2013 |
Lens focal length | 14.303 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | GIMP 2.8.2 |
File change date and time | 11:23, 16 November 2013 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 10:39, 15 June 2013 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 10.28125 |
APEX aperture | 4.34375 |
APEX exposure bias | 0 |
Maximum land aperture | 4.34375 APEX (f/4.51) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 15,136.929460581 |
Focal plane Y resolution | 15,116.022099448 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |