A Laboratory Course in Everyday PhysicsMacmillan, 1931 - 205 σελίδες |
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Σελίδα 90
... cold . Before trying to answer the questions , " Why does a stove draw ? " etc. , it will be well to show that hot water weighs less than the same volume of cold water , and that hot air weighs less than the same volume of cold air ...
... cold . Before trying to answer the questions , " Why does a stove draw ? " etc. , it will be well to show that hot water weighs less than the same volume of cold water , and that hot air weighs less than the same volume of cold air ...
Σελίδα 91
... cold air , then , is pulled down by the at- traction of the earth with a greater force than the hot air . The cold air is therefore pulled to the bottom of the box , and forces up the hot air . This cold air is in turn warmed by the ...
... cold air , then , is pulled down by the at- traction of the earth with a greater force than the hot air . The cold air is therefore pulled to the bottom of the box , and forces up the hot air . This cold air is in turn warmed by the ...
Σελίδα 121
... cold water , and the number of B. T. U. the hot water gave to the cold water . Equal weights of Iron & water heated to 212 ° F . Equal weights of Cold water FIG . 85. Comparing iron and water as foot warmers . Example . If the hot iron ...
... cold water , and the number of B. T. U. the hot water gave to the cold water . Equal weights of Iron & water heated to 212 ° F . Equal weights of Cold water FIG . 85. Comparing iron and water as foot warmers . Example . If the hot iron ...
Περιεχόμενα
CHAPTER | 1 |
CHAPTER II | 13 |
CHAPTER III | 20 |
Πνευματικά δικαιώματα | |
16 άλλες ενότητες δεν εμφανίζονται
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
amperes appliances armature atmosphere B. T. U. of heat bell body boiling point Boyle's law British Thermal Unit calories carbon centimeter coil cold water compressed convection cooled copper cubic cylinder Daniell cell density diagram direction distance dynamo electric current electromagnet electromotive force engine equal evaporation example exerted expands experiment fire flask foot pounds force arm fruit press fulcrum gases glass gram hot-water induced current iron jackscrew Joule's law lamp latent heat Leclanché cell lens lever lines of force liquid magnetic lines measure mercury metal meter molecules motor moves north pole object Ohm's law ohms Pascal's law passes pipe piston placed plate poundals pressure produced radiation rays resistance screw shown in Fig sound south pole square inch steam stove stroke substance surface tank temperature thermometer tube turned vacuum valve velocity vibration volts volume warmed watts waves weight arm wire