Crosshole tomography is usually carried out under the condition of isotropy.

Research on nuclear explosion locating used pinhole imaging;

In order to verify the feasibility of study on X-ray source with pinhole imaging method,and optimize the design of X-ray pinhole imaging system,an X-ray pinhole imaging equipment was set up.

Pinhole imaging of the neutron production in laser-driven inertial confinement fusion experiments can provide important information about performance of various capsule designs.

For the elementary hologram,except normal holographic imaging,as the diverging angle of reconstructing curved surface sub wave is very small,by use of the principle of small hole imaging,it forms a standing upside down real image in the observation screen.

This paper is based on ideal pin-hole imaging model and researches the distortion problem of CCD camera.

Then it points out that the phenomenon is not diffraction but the puncture forming picture and gives the new opinion to contents of the ancients.

This paper analyses some experiments that Fang Yizhi discussed in his theory about Guang Fei Ying Shou,points out that Fang s theory does not deal with the phenomenon of the light diffracted, but merely refers to the phenoemnon of the puncture forming picture and the atmosphere scattering light.

In order to easily measure the beam spot size of high energy electron accelerators with internal target enclosed, a real-time system, based on thick pinhole imaging technique, is employed.