Category: Engineering & Technology
[S] 1. ELECTRICITY.--The primary cause of all the effects which we are about to consider resides in a force known as _electricity_, from the Greek name of amber (electron), this being the body in which the manifestations were first observed. The ancients were acquainted with a...
[S] 66. However good may be the bells, indicators, batteries, etc., used in an electric bell installation, if the _wiring_ be in any wise faulty, the system will surely be conti...
3. CHAPTER III.[S] 41. An electric bell is an arrangement of a cylindrical soft iron core, or cores, surrounded by coils of insulated copper wire. On causing a current of electricity to flow r...
2. CHAPTER II.[S] 17. If we immerse a strip of ordinary commercial sheet zinc in dilute acid (say sulphuric acid 1 part by measure, water 16 parts by measure[4]), we shall find that the zinc...
4. CHAPTER IV.[S] 53. All the appliances which have hitherto been described, would be utterly useless for the purposes intended, had we not at hand some means of easily, certainly and rapidly...
1. CHAPTER I.[S] 1. ELECTRICITY.--The primary cause of all the effects which we are about to consider resides in a force known as _electricity_, from the Greek name of amber (electron), this...