Junior General ScienceHinds, Hayden & Eldredge, Incorporated, 1922 - 434 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Junior General Science (Classic Reprint) Daniel Russell Hodgdon Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acid aerial alternating current amount amperes atmosphere atom bacteria barometer battery body boiling bottle burning called carbohydrates carbon dioxide causes cent clouds coil cold color condenser contains cool cubic DAH DAH DAH DIT DAH diaphragm digestion direct current direction disease distance DIT DIT DIT earth electricity electromagnetic electromagnetic waves electrons ether evaporation feet filament fire fluid ounces freezing frequency germs glass grid heat hydrogen hydrometer inches lens light liquid magnetic field mercury metal meter miles milk modulated moisture molecules moon object oscillating oxygen particles pass pipes plate position pounds pressure produce protein radiated radio waves rain rays receiving rise side sound waves space square starch stars steam substance sugar surface telephone temperature thermometer tube TUT TUT vacuum tube vibrations voltage warm wave length weather weight wind wire
Δημοφιλή αποσπάσματα
Σελίδα 321 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Σελίδα 322 - Square Measure. 144 square inches 1 square foot, 9 square feet 1 square yard, 30J square yards 1 square rod, 40 square rods 1 rood, 4 roods 1 acre.
Σελίδα 56 - Above the rest, the sun who never lies, Foretells the change of weather in the skies : For, if he rise unwilling to his race, Clouds on his brow, and spots upon his face, Or if through mists he shoots his sullen beams, Frugal of light, in loose and straggling streams, Suspect a drizzling day, with southern rain, Fatal to fruits and flocks, and promis'd grain.
Σελίδα 323 - OF TIME. 60 Seconds = 1 Minute 60 Minutes =± 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...
Σελίδα 328 - To find diameter of a circle multiply circumference by .31831. To find area of a circle multiply square of diameter by .7854. To find area of a triangle multiply base by one-half perpendicular height.
Σελίδα 55 - A red flag with a black center indicates that a storm of marked violence is expected. The pennants displayed with the flags indicate the direction of the wind ; red. easterly (from northeast to south) ; white (westerly from southwest to north).
Σελίδα 55 - Warning. Two red flags with black centers, displayed one above the other, indicate the expected approach of a tropical hurricane, or one of those extremely severe and dangerous storms which occasionally move across the Lakes and northern Atlantic coast.
Σελίδα 44 - When the wind sets in from points between east and northeast and the barometer falls steadily a storm is approaching from the south or southwest, and its center will pass near or to the south or east of the observer within twelve to twenty-four hours, with wind shifting to northwest by way of north.
Σελίδα 322 - Dry Measure. — 2 pints = 1 quart; 8 quarts = 1 peck; 4 pecks = 1 bushel.
Σελίδα 56 - After fine, clear weather, the first signs in the sky of a coming change are usually light streaks, curls, wisps, or mottled patches of white distant clouds, which increase, and are followed by an overcasting of murky vapor that grows into cloudiness. This appearance, more or less oily or watery, as wind or rain will prevail, is an infallible sign.