Recent content by arnoke

Tnx for your response, ZacharyM. I'll definitely test it, once I get hold of a new vaporizer (broke my old one :)). The strange thing however, is that most manuals state that soap will indeed change the surface tension, stopping the vapor production as a result. e.g...

Hi all, For a science project, I'm using mist, created by an ultrasonic humidifier. An ultrasonic humidifier uses a membrane that vibrates at ultrasonic frequency to disperse water into tiny droplets, resulting in a cool mist. Now I was wondering; is there a way to reduce the droplet size...

Interesting. For some reason I find it more difficult to understand this for light coming from an LCD screen, then for light rays coming from, for instance, a projector/beamer. A projector casts a diverging beam of light, that is only diffused/scattered when it hits the projection screen. An LCD...

You can get the same effect with a concave mirror in stead of a convex lens. The old Sega "Time Traveler" game is an example of this: http://en.wikipedia.org/wiki/Time_Traveler_(video_game) It creates a real image of a CRT monitor by reflection in a concave mirror. The result is something that...

Currently it is just a theoretical exercise, but in the end I'm thinking about building something. Just want to order the right lenses, as they are not so cheap (at least at Edmund Optics). I once build the image floating device that I described earlier. An example of this, but using a mirror...

I remember playing around with fresnel lenses a while ago. When I placed an object (e.g. my Ipad) at distance 2f behind the lens, I could see the inverted image, floating 'in thin air', in front of the lens. Isn't that a real image then? Also, theoretically, if I would have placed the object at...

Tnx for your reply. Just to be sure; that would mean that I would see a 'floating' (real) image that is larger than the lens?

Hi all, This is probably a silly questions, but I want to be sure :). I'm wondering if a real image, created by a convex lens, can appear larger than the lens diameter itself. As an example, I'm thinking about the following: - I have a an object of height h_0=7.76" (display size of...

Hi all, I'm playing around with an autocue type of display. So basically, there is an LCD display that reflects light on a piece of plexi, at a 45 degrees angle. I know that the LCD dispay is horizontally polarized, so I can calculate the refraction and reflection coefficients of the...