enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Ground-glass opacity - Wikipedia

   en.wikipedia.org/wiki/Ground-glass_opacity

   Ground-glass opacity (GGO) is a finding seen on chest x-ray (radiograph) or computed tomography (CT) imaging of the lungs. It is typically defined as an area of hazy opacification (x-ray) or increased attenuation (CT) due to air displacement by fluid, airway collapse, fibrosis , or a neoplastic process . [ 1 ]

3. X-ray optics - Wikipedia

   en.wikipedia.org/wiki/X-ray_optics

   One of the mirrors of XRISM made of 203 foils. X-ray mirrors can be made of glass, ceramic, or metal foil, coated by a reflective layer. [1] The most commonly used reflective materials for X-ray mirrors are gold and iridium. Even with these the critical reflection angle is energy-dependent. For gold at 1 keV, the critical reflection angle is 2. ...

4. Kirkpatrick–Baez mirror - Wikipedia

   en.wikipedia.org/wiki/Kirkpatrick–Baez_mirror

   It is named after Paul Kirkpatrick and Albert Baez, the inventors of the X-ray microscope. [1] Although X-rays can be focused by compound refractive lenses, these also reduce the intensity of the beam and are therefore undesirable. KB mirrors, on the other hand, can focus beams to small spot sizes with minimal loss of intensity.

5. Ground glass - Wikipedia

   en.wikipedia.org/wiki/Ground_glass

   In motion-picture cameras, the ground glass is a small, usually removable piece of transparent glass that sits between the rotary disc shutter and the viewfinder. The ground glass usually contains precise markings to show the camera operator the boundaries of the frame or the center reticle, or any other important information. Because the ...

6. Spin casting (mirrors) - Wikipedia

   en.wikipedia.org/wiki/Spin_casting_(mirrors)

   Goble, L. W., et al. "Spincasting of a 3.5-m diameter f/1.75 mirror blank in borosilicate glass." Advances in Fabrication and Metrology for Optics and Large Optics. Vol. 966. International Society for Optics and Photonics, 1989. Hill, J. M., and J. R. P. Angel. "The Casting of the 6.5 m Borosilicate Mirror for the MMT Conversion.

7. Wolter telescope - Wikipedia

   en.wikipedia.org/wiki/Wolter_telescope

   X-ray mirrors can be built, but only if the angle from the plane of reflection is very low (typically 10 arc-minutes to 2 degrees). [2] These are called glancing (or grazing ) incidence mirrors . In 1952, Hans Wolter outlined three ways a telescope could be built using only this kind of mirror.