enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Köhler illumination - Wikipedia

   en.wikipedia.org/wiki/Köhler_illumination

   Köhler illumination is a method of specimen illumination used for transmitted and reflected light (trans- and epi-illuminated) optical microscopy.Köhler illumination acts to generate an even illumination of the sample and ensures that an image of the illumination source (for example a halogen lamp filament) is not visible in the resulting image.

3. Ring flash - Wikipedia

   en.wikipedia.org/wiki/Ring_flash

   An LED-based ring flash. A ring flash is a circular light that is often operated with a camera lens in the center to take photographs. Unlike point light sources, a ring flash can illuminate a subject with minimal shadows by closely and evenly surrounding the optical axis of the camera lens.

4. Flash (photography) - Wikipedia

   en.wikipedia.org/wiki/Flash_(photography)

   Slower shutter speeds (typically from 1 ⁄ 10 to 1 ⁄ 50 of a second) were initially used on cameras to ensure proper synchronization and to make use of all the bulb's light output. Cameras with flash sync triggered the flashbulb a fraction of a second before opening the shutter to allow it to reach full brightness, allowing faster shutter ...

5. Optical microscope - Wikipedia

   en.wikipedia.org/wiki/Optical_microscope

   The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century.

6. USB microscope - Wikipedia

   en.wikipedia.org/wiki/USB_microscope

   A miniature USB microscope with inbuilt LED lights next to the lens at left. Sea salt crystals seen with a USB microscope. Table salt crystals seen with a USB microscope. The top side of a sage leaf seen with a USB microscope - trichomes are visible. The USB image of the underside of a sage leaf - more trichomes are visible on this side.

7. Xenon arc lamp - Wikipedia

   en.wikipedia.org/wiki/Xenon_arc_lamp

   However, even in a high pressure lamp there are some very strong emission lines in the near infrared, roughly in the region from 850 to 900 nm. This spectral region can contain about 10% of the total emitted light. [citation needed] Light intensity ranges from 20,000 to 500,000 cd/cm 2. An example is the "XBO lamp", which is an OSRAM trade name ...