Do You know- നിങ്ങൾക്ക് അറിയാമോ? ⭕💢⭕💢⭕💢⭕💢 After testing thousands of materials including cotton thread, linen, wood splints, and even human hair — Edison found that Carbonized bamboo as the best filament that could last more than 1,200 hours without burning. .⭕💢⭕💢⭕💢 #പുതിയ അറിവുകൾ 😍😍 #എഡിസൺ👏👍