De Viquipèdia
Mida d'aquesta previsualització: 800 × 550 pixel
Imatge en resolució més alta (1886 × 1296 píxels, mida de l'arxiu: 335 KB, tipus MIME: image/jpeg)
|
| Aquest arxiu és una càrrega compartida, extreta del projecte Wikimedia Commons i pot ser usada per altres projectes. Si voleu disposar de més informació sobre el fitxer, podeu visitar la pàgina original
|
Edited by Fir0002
| Description |
English: Ferrofluid on a reflective glass plate under the influence of a strong/steep magnetic field.
עברית: he:נוזל מגנטי אשר נמצא על זכוכית משקפת תחת השפעת מגנט חזק.
|
| Source |
By uploader
|
| Date |
2006-07-09
|
| Author |
Gregory F. Maxwell
|
| Permission |
GFDL-1.2
|
Ferrofluid, a paramagnetic fluid composed of nanoscale ferromagnetic particles suspended in a carrier fluid, was placed onto a glass plate. The edges of the glass plate are visible at the bottom of the image. A powerful N40 neodymium magnet was placed under the glass along with an iron rod to steepen the field. Spikes form, in a phenomenon called normal field instability, where the magnetic forces are great enough to overcome gravity and surface tension to align the fluid in a magnetically ideal manner.
[edit] Equipment
- Canon 5D
- 100mm/f2.8 Macro at f/20
- ISO 100, 1 second exposure
- Background illumination provided by 240watts of 6500K high-cri fluorescent. Highlight illumination by photoflash reflected off a 4ft x 1.5 ft white matt panel.
[edit] Processing
- RAW to 16bit conversion with dcraw
- Slight rotation
- Cropping to 4:3 aspect
- Gain to bring background to white.
- Minor cloning to remove sensor dust from background area
- Scaled to 2048x1536
|
I, the author of this work, hereby publish it under the following license:
|
Enllaços a la imatge
Les següents pàgines enllacen a aquesta imatge: