A Simple Method to Test Microscope Objectives Using a Laser Pointer
نویسندگان
چکیده
منابع مشابه
A Simple Method to Improve Hazelnut Grafting
Hazelnuts are usually propagated by suckers or layering. However, other methods of propagation have been tested with variable results. Grafting is a method that has a few advantages such as fast multiplication rate, earlier fruiting and reducing sucker removal cost on specific rootstocks. Unfortunately, grafting is difficult due to slow formation of callus in hazelnuts. Here, we report the hypo...
متن کاملAn Approach to using a Laser Pointer as a Mouse
Modern technologies have evolved to present different ways users can interact with computers. Nowadays, computers and projectors are commonly used in teaching and presentations, in which the mouse and the USB wireless presenter are two of the main presentation devices. However, the USB wireless presenter, usually a laser pointer, cannot simulate the movement of a mouse but only simulate the act...
متن کاملGesture Recognition Using a Laser Pointer
This work proposes an alternative computer control method based upon a standard laser pointer and LCD projector, used to control applications and recognise specific contextual gestures at a significant stand-off distance. The use of a 1-d left-to-right hidden Markov model allows a range of predefined gestures to be identified, and interpreted according to the application being used. Additionall...
متن کاملA quantum laser pointer.
The measurement sensitivity of the pointing direction of a laser beam is ultimately limited by the quantum nature of light. To reduce this limit, we have experimentally produced a quantum laser pointer, a beam of light whose direction is measured with a precision greater than that possible for a usual laser beam. The laser pointer is generated by combining three different beams in three orthogo...
متن کاملA method for characterizing longitudinal chromatic aberration of microscope objectives using a confocal optical system
We describe a novel method of characterizing the longitudinal chromatic aberration of microscope objectives by recording a series of axial responses as a function of wavelength as a plane reflector is scanned through the focal region of a confocal microscope. Measurements are presented for a variety of objectives with differing degrees of correction. The use of the chromatic focal shift to meas...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Microscopy Today
سال: 2019
ISSN: 1551-9295,2150-3583
DOI: 10.1017/s1551929519000841