Instead of using the center focus knob to focus the left eye, just use the diopter on the left eyepiece to focus the image. Then, do the same with the right side. Don't forget the setting for each eyepiece - this will always be your basic setting to start off with when glassing. B...
The iris has two muscles: The dilator muscle makes the iris smaller and therefore the pupil larger, allowing more light into the eye; the sphincter muscle makes the iris larger and the pupil smaller, allowing less light into the eye. Pupil size can change from 2 millimeters to 8 millimeters...
Generally, you want to use an eyepiece that provides an exit pupil of 2-4 mm for galaxies, 4–7 mm for emission nebulae and open star clusters (if your skies are dark and/or a filter is used), and 1-2 mm for globular star clusters. Very small exit pupils (and thus high powers) ...
An ordinary light microscope uses photons of light, which are equivalent to waves with a wavelength of roughly 400–700 nanometers. That's fine for studying something like a human hair, which is about 100 times bigger (50,000–100,000 nanometers in diameter). But what about a bacteria ...
Pupil diameterNorepinephrine systemStroopThe ability to process emotionally conflicting information is an important requirement for emotional self-control. While it seems obvious that the impact of interfering emotional information critically depends on how deeply this interfering information is processed, it ...
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