divya23 wrote:galileo did not invent d telescope,but on hearing ,in 1609,that such an optical int had been made,he quickly built his own device from and organ pipe and spectral lenses

even though galilio did not inventted d tele,on hearing ,in 1609,that such an optical inst had been made,he quuckly built his own device from and organ pipe and spectral lenses..


[spoiler]oa = 1[/spoiler]