Those are trichomes, but not what you're thinking. Trichomes are all over the plant, they look like small fine hairs covering the leaves, stems, etc, and are found on males too, but aren't unique to cannabis plants.
The glandular stalked trichomes that you are looking for, usually don't start to show up until the 3rd or 4th week of flowering. They'll form on the pistils, flower, surrounding leaves, and etc. etc. I don't care what you call them, but yeah those are trichomes, no they're not the ones you're looking for, not just yet.
http://www.420magazine.com/forums/how-grow-marijuana/71982-what-trichomes-trichome-101-a.html
http://www.marijuanapassion.com/forum/showthread.php?t=1938
If you have any binoculars you can use those instead of a magnifier, they work like a microscope if you look through them backwards. The strength depends on the strength of the binocular lenses, and using one side or the other works best because up close they won't be pointed at the same spot. Put your eye up to the lens like usual and have the end like an inch or two from the plant. You can take pictures through them this way too if you have a camera with a decent zoom.
You can buy them tons of places, and then you have binoculars and a high power magnifier, bonus
