Lab accident: Listen & Download Lab accident .mp3 Error! Change your browser, please! ⇓ Download Item falls on concrete ⚠ Sine wave (975Hz) ⚠ Servo motor ⚠ Plastic bag ⚠ Tambourine ⚠ Opening, closing the umbrella ⚠ The noise of the elevator, knocking ⚠ Umbrella opening ⚠ Fussing in the thicket, rustling leaves ⚠ Electronic sounds ⚠ Throw an old bike to the ground ⚠ Laundry Dryer ⚠ ★★★★★