First, if you want to see more details in these images simply click the image and it will go to a page where the image is its native size.
Second, PC and Macs in their various browsers usually have the ability to enlarge any part of the viewing area. On a Mac hold down the Control button and scroll the wheel on the mouse....cool! On the PC hold the Control button down and also scroll the wheel. If you don't have a wheel you can hold down Control and hit the (+) or (-) buttons.