When recording holograms with a digital image sensor, the sampling theorem is to be fulfilled. This requirement limits
possible values of the angle between the object and reference waves. However there is a theoretical possibility of
reconstruction of finite-sized object image, even when spatial frequencies of hologram structure are above the Nyquist
limit. In this paper such a possibility is experimentally verified and investigated by example of lensless Fourier transform
digital holography. It is shown, that excess of the Nyquist frequency by spatial frequencies of the hologram structure
does not necessarily lead to object image disappearance. However, it leads to gradual degradation of the object image.
Present paper focuses on correction for effect of vertical imbalance, which can make difficulties to observing
stereoscopic image in Greenough stereoscopic microscopes. In the context of geometrical optics we derive condition of
vertical imbalance elimination for all points of stereoscopic image observed in Greenough stereoscopic microscope.
Possible method for improved displaying stereoscopic images captured with converged camera configuration is proposed. The essence of the method is presenting stereoscopic images with display geometry corresponding to that of converged camera configuration.
Present paper describes new method for eliminating depth plane curvature stereoscopic distortion by depicting each of
two perspective images on separate flat screen with these two screens intersecting at certain angle.
The paper concerns Chinese stratagems which demonstrate practically proved original approach to solving of
extraordinary problems. Such questions as what stratagem is, how stratagems may concern physics and how physicists
could benefit from stratagem thinking are discussed. Present paper is opening the topic of stratagem thinking application
in physics and its main purpose is to attract attention to opportunities of such an application.
It is essential that our audience be attentive during lecture, report or another presentation on physics. Therefore we have to take care of both speech and visual communication with audience. Three important aspects of successful visual aids use are singled out in this paper. The main idea is that physicists could appreciably increase efficiency of their presentations by use of these simple principles of presentation art. Recommendations offered are results of special literature research, author' s observations and experience of communication with skilled masters of presentations.
The importance of presentation and debate skills for scientists is obvious. However it may be difficult to find the right balance between the time spent on mastering these skills and that spent on science. Application of Pareto principle or “the eighty to twenty rule” can be a solution of this problem. In practice Students Speech and Debate Club can help young scientists master the required speech and debate skills with minimum of effort and maximum of result.