1 Indeed, over 100 million Americans are now dependent on the Federal government for something. 2  Taxes were significantly lower in 1929 than today, even as a percent of family income. 3  Most businesses paid no taxes in 1929, and today we have the highest corporate tax rate in the world.4  Sales and FICA taxes didnât exist. Indeed, over 100 million Americans are now dependent on the Federal government for something. 2  Taxes were significantly lower in 1929 than today, even as a percent of family income. 3  Most businesses paid no taxes in 1929, and today we have the highest corporate tax rate in the world. 4  Sales and FICA taxes didnât exist.
A compound microscope uses a lens close to the object being viewed to collect light (called the objective lens) which focuses a real image of the object inside the microscope (image 1). That image is then magnified by a second lens or group of lenses (called the eyepiece) that gives the viewer an enlarged inverted virtual image of the object (image 2).
To see very small objects like viruses, drastic changes in the way the image is created are required (see the section Electron Microscopes below). Other Light Microscopes Some microscopes are designed to compensate for the problems of contrast and resolution that limit the function of the compound microscope.