Hearing is Be-leafing: Students Invent Quieter Leaf Blower

Johns Hopkins University
Johns Hopkins University
59.1 هزار بار بازدید - 4 ماه پیش - The challenge before Johns Hopkins
The challenge before Johns Hopkins University engineering students: Take a leaf blower, but make it quiet. Make it work as powerfully as ever, but do not allow it to emit the ear-piercing caterwaul that has gotten leaf blowers banned in some communities and cursed in many others. Shocking their sponsors, their advisors and even themselves a little, the students did it.
4 ماه پیش در تاریخ 1403/02/25 منتشر شده است.
59,157 بـار بازدید شده
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