Some new methods for planetary exploration

For many centuries the planets of our solar system have been objects of study by astronomers. Before the invention of the telescope, these studies were restricted to an attempt to understand and predict their motion. Telescopes and accurate clocks allowed more precise observations to be made. By the 19th century, minor perturbations of the motions of the planets were being analyzed. By the end of this century, however, astronomers were becoming more interested in stellar and galactic problems, and the group interested in celestial mechanics and planetary observations appeared to be decreasing to a vanishing point in the mid-20th century. Then came the space program, and the possibility of performing experiments on, or at least near, other planets encouraged interest in the solar system to a remarkable degree

Exploration of the moon and planets

Unmanned interplanetary flight - engineering problems of mariner ii space prob

What is a Modern Physician?

The first thing to remember is that the patient is not just a pair of tonsils, or perhaps, a skin, a prostate gland, or a pregnant uterus. This is a person. And it is essential that you should treat the patient as a person, as an individual who has feelings just like you and I have, who has a family background like you and I have, who has personal, domestic, and business problems, as most of us have

The Radio Sonde

The radio sonde has been developed in recent years as a practical instrument for transmitting information from the stratosphere. This paper discusses some of the problems connected with the application of the radio-sonde principle to the radio meteorograph and also to the cosmic-ray radio sonde