Camera Maker | Nikon Corporation | Camera Model | NIKON D7500 |
Aperture | f/10 | Color Space | sRGB |
Exposure Value | -2 EV | Exposure Program | Aperture Priority |
Exposure Time | 2/5 sec | Flash | No Flash |
Focal Length | 18 mm | ISO | 200 |
Metering Mode | Pattern | Date/Time | 2017:12:22 15:30:35 |
Resolution Unit | Inch | X Resolution | 240 dots per ResolutionUnit |
Y Resolution | 240 dots per ResolutionUnit | Compression | Jpeg Compression |
Contrast | 0 | Exposure Mode | 0 |
Saturation | 0 | Scene Type | Directly Photographed |
Sharpness | 0 | Caption | This may be the first design of a ball bearing. In a ball bearing, smooth balls roll between two surfaces, reducing the friction between then. Leonardo used this design to construct a revolving stage for a theater production at the court of Milan. Today, the descendants of Leonardo's ball bearing are found in many mechanisms, from skateboards to computer hard drives, conveyor belt rollers to Lazy Susans, automobile transmissions to bar stools. |