How it Works

How it Works
Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use

By

0
(0 Reviews)
How it Works by Archibald Williams

Pages:

244

Downloads:

4,657

Share This

How it Works
Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use

By

0
(0 Reviews)
How does it work? This question has been put to me so often by persons young and old that I have at last decided to answer it in such a manner that a much larger public than that with which I have personal acquaintance may be able to satisfy themselves as to the principles underlying many of the mechanisms met with in everyday life. (see http://www.gutenberg.org/files/28553/28553-h/28553-h.htm for illustrations)

Book Excerpt

If you place a pot filled with water on an open fire, and watch it when it boils, you will notice that the water heaves up at the sides and plunges down at the centre. This is due to the water being heated most at the sides, and therefore being lightest there. The rising steam-bubbles also carry it up. On reaching the surface, the bubbles burst, the steam escapes, and the water loses some of its heat, and rushes down again to take the place of steam-laden water rising.

[Illustration: FIG. 1.]

[Illustration: FIG. 2.]

If the fire is very fierce, steam-bubbles may rise from all points at the bottom, and impede downward currents (Fig. 1). The pot then "boils over."

Fig. 2 shows a method of preventing this trouble. We lower into our pot a vessel of somewhat smaller diameter, with a hole in the bottom, arranged in such a manner as to leave a space between it and the pot all round. The upward currents are then separated entirely from the downward, and the fire can be forced to a ve

Catherine Stine - Supernatural Thrills, Devious Villains and Royal Merfolk
FEATURED AUTHOR - Catherine Stine is a USA Today bestselling author of paranormal, urban, and historical fantasy with romance. Witch of the Wild Beasts won second prize in the Romance Writers of America’s Sheila Contest. Other novels have earned Indie Notable awards and New York Public Library Best Books for Teens. She lives in New York State and grew up in Philadelphia. As our Author of the Day, she tells us all about her book, Secrets of the Mermaid.