Search results
Results from the WOW.Com Content Network
Schlieren imaging is a method to visualize density variations in transparent media. [ 1 ] Schlieren imaging of a focusing ultrasonic transducer Schlieren image sequence of a bullet traveling in free-flight, demonstrating the air pressure dynamics surrounding the bullet
Optical layout of a single-mirror schlieren system. Classical schlieren imaging systems appear in two configurations, using either one or two mirrors. In each case, a transparent object is illuminated with collimated or nearly-collimated light. Rays that are not deflected by the object proceed to their focal point, where they are blocked by a ...
Schlieren (/ ˈ ʃ l ɪər ən / SHLEER-ən; German: [ˈʃliːʁn̩] ⓘ, German for 'streaks') are optical inhomogeneities in transparent media that are not necessarily visible to the human eye. Schlieren physics developed out of the need to produce high-quality lenses devoid of such inhomogeneities.
Synthetic schlieren is a process that is used to visualize the flow of a fluid of variable refractive index. Named after the schlieren method of visualization, it consists of a digital camera or video camera pointing at the flow in question, with an illuminated target pattern behind.
English: This is high-speed schlieren imaging of a bullet in free flight. It was captured with a Phantom v12.1 by Nathan Boor of Aimed Research. This is also an example of a knife edge cut-off, single pass schlieren system. One optical element was close to the point of focus and the lines in the glass can be seen.
An experiment using Laser Schlieren Deflectometry (LSD) for temperature measurements in the argon plasma jet. Laser schlieren deflectometry (LSD) is a method for a high-speed measurement of the gas temperature in microscopic dimensions, in particular for temperature peaks under dynamic conditions at atmospheric pressure.
Schlieren photography (from the German word for "streaks") allows the visualization of density changes, and therefore shock waves, in fluid flow. Schlieren techniques have been used for decades in laboratory wind tunnels to visualize supersonic flow about model aircraft, but not full scale aircraft until recently.
In 1934 he earned his PhD with honors, delivering a dissertation on the Toepler Schlieren photography method under the guidance of Cranz. This and later publications on this topic made Schardin the 20th-century patriarch of Schlieren photography and Shadowgraph imaging.