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Article THE PIEES OP HEAVEN. ← Page 3 of 4 →
Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
The Piees Op Heaven.
velocity of sound that its motion m The sound , therefore , originates from all parts at the same moment of time . But as these parts are frequently at greatly d ta , nees from the observer , and as sound moves only at the rate of about 1 , 100 feet in a second , it is evident that the sound from them
will reach the observer at different times , and will be of different degrees of loudness . Also several points ma ^ tance , and the sounds from each of them reaching the place of observation at the same time will have the effi increased power . Every contortion and irregularity in the flash will consequently produce a coi ^ esponding irregularity in the sound .
The slow motibn of sound also furnishes a- very convenient method of determining the distance of a flash , The light travels so fast , that its motion may be considered as irBtantane of sound , so that the moment the flash is seen , then the discharge takes place . But supposing the cloud ^ thunder will not be bear ed until nearly five seconds afterwards . Hence the distance of the cloud may observing the time
vvhich elapses between the flash and the commencement of the thttnder-elarj , reckoning or six pulsations of t & w This is very useful , as it shews what danger is to be apprehended from the sto ^ it is approaching or fecedi ^ immediately after the flash , it is evident ; that the observer is in great danger , as the thuhder cloud is then very close to him .
Large bodies of water and masses of metal attract lightning , as also do pointed bodies , such as peaks of mountains , spires of churches , or trees . Trees are particularly dangerous , and in no case should refuge be taken under them during a storm . Many persons have met premature deaths by doing so . An instance of this occurred a short time ago . A party of three men were overtaken by
a thunder storm , and two of them proposed to stand under an adjacent tree ; the third used every effort to dissuade them , saying that such a course would be exceedingly dangerous , but without avail . He then left them and walked on to a cottage , where he took shelter . . After the storm had ceased , his companions were searched for , and found dead under the tree , which had been struck .
Solitary hills and buildings are peculiarly exposed to lightning , while there are some valleys which are entirely safe , the lightning being invariably drawn off' by the surrounding hills . When lightning strikes a building , it generally follows the conductors , such as the bell wires , pipes , metal roofing , & c . Hot air is a conductor ; hence the lightning frequently passes down heated chimneys , and so into rooms .
The principle of pointed bodies attracting electricity is turned to advantage in the lightning conductor , or paratonnerre , an instrument designed to protect buildings from the effects of lightning . It consists of a long upright metal rod , the lower end of which is fixed im or connected with the earth , and terminating at the top in
Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
The Piees Op Heaven.
velocity of sound that its motion m The sound , therefore , originates from all parts at the same moment of time . But as these parts are frequently at greatly d ta , nees from the observer , and as sound moves only at the rate of about 1 , 100 feet in a second , it is evident that the sound from them
will reach the observer at different times , and will be of different degrees of loudness . Also several points ma ^ tance , and the sounds from each of them reaching the place of observation at the same time will have the effi increased power . Every contortion and irregularity in the flash will consequently produce a coi ^ esponding irregularity in the sound .
The slow motibn of sound also furnishes a- very convenient method of determining the distance of a flash , The light travels so fast , that its motion may be considered as irBtantane of sound , so that the moment the flash is seen , then the discharge takes place . But supposing the cloud ^ thunder will not be bear ed until nearly five seconds afterwards . Hence the distance of the cloud may observing the time
vvhich elapses between the flash and the commencement of the thttnder-elarj , reckoning or six pulsations of t & w This is very useful , as it shews what danger is to be apprehended from the sto ^ it is approaching or fecedi ^ immediately after the flash , it is evident ; that the observer is in great danger , as the thuhder cloud is then very close to him .
Large bodies of water and masses of metal attract lightning , as also do pointed bodies , such as peaks of mountains , spires of churches , or trees . Trees are particularly dangerous , and in no case should refuge be taken under them during a storm . Many persons have met premature deaths by doing so . An instance of this occurred a short time ago . A party of three men were overtaken by
a thunder storm , and two of them proposed to stand under an adjacent tree ; the third used every effort to dissuade them , saying that such a course would be exceedingly dangerous , but without avail . He then left them and walked on to a cottage , where he took shelter . . After the storm had ceased , his companions were searched for , and found dead under the tree , which had been struck .
Solitary hills and buildings are peculiarly exposed to lightning , while there are some valleys which are entirely safe , the lightning being invariably drawn off' by the surrounding hills . When lightning strikes a building , it generally follows the conductors , such as the bell wires , pipes , metal roofing , & c . Hot air is a conductor ; hence the lightning frequently passes down heated chimneys , and so into rooms .
The principle of pointed bodies attracting electricity is turned to advantage in the lightning conductor , or paratonnerre , an instrument designed to protect buildings from the effects of lightning . It consists of a long upright metal rod , the lower end of which is fixed im or connected with the earth , and terminating at the top in