![](https://people.utm.my/mohdshahrizanmohdsaad/wp-content/uploads/sites/1105/2023/12/Edison-Friend-beard-1024x523.jpeg)
![](https://people.utm.my/mohdshahrizanmohdsaad/wp-content/uploads/sites/1105/2023/12/Filament-1024x490.jpeg)
Thomas Edison experimented with 1,600 materials to obtain long-lasting filaments, and one of them was his friend’s beard.
![](https://people.utm.my/mohdshahrizanmohdsaad/wp-content/uploads/sites/1105/2023/12/1600-meterial-tested-1024x518.jpeg)
Source : Seriuosly Amazing Objects, Global Trekker Channel
Thomas Edison experimented with 1,600 materials to obtain long-lasting filaments, and one of them was his friend’s beard.
Source : Seriuosly Amazing Objects, Global Trekker Channel