ⵉⴱⴰⵢⵏ ⵢⴰⵏ ⴳ ⵉⵙⵙⴼⵔⵓⵜⵏ ⵉⵎⴰⵙⵙⴰⵏ ⵉⵎⵣⵡⵓⵔⴰ ⵖⴼ ⵓⵙⵏⵜⵍ ⴰⴷ ⴳ ⵓⵎⴳⵔⴰⴷ ⵜⴼⵙⵔⵜ ⵜⵙⵖⵓⵏⵜ Scientific American ⴳ ⵓⵙⴳⴳⵯⴰⵙ ⵏ 1878 ⵙ ⵓⵣⵡⵍ “ ⵉⵙ ⵉⵜⵜⵓⵙⵖⵢⵜ ⵡⴰⵢⵢⵓⵔ?”.