合理的懷疑
（re. 法鼓山紅繩自震事件）
仔细看這6條紅繩，只有鄭麗文手中握的那條不是平整自然垂挂。
合理的懷疑：繩的本身有問題，會不會之前被設計過? 比如塞進可遥控的電流器？
綠媒如不入流的三粒底下的留言區，讓人見識了自稱是“佛教徒”們的口業。
如何讓繩子自己震動？ 以下是谷歌大神教的：
To make a rope vibrate by itself, you must create a sustained, alternating force that matches the rope's natural resonant frequency, often achieved by passing an electrical current through a wire (acting as a string) placed near a magnet, or by using a motor to shake it. Creating standing waves requires constant tension.
Here are the primary ways to achieve this, based on principles of physics:
- Electromagnetic Drive (Magnetic Plucking):
- Setup: Suspend a conductive wire or metal-coated string between two fixed points.
- Force: Place a strong magnet near the center of the wire.
- Activation: Run an Alternating Current (AC) through the wire. The interaction between the magnetic field and the current causes the wire to vibrate at the frequency of the AC, acting as a "self-vibrating" string.
- Mechanical Shaker/Motor:
- Setup: Tie one end of a string or rope to a fixed point and the other to a small DC motor with an unbalanced load (a weight on the shaft).
- Action: As the motor spins, the unbalanced load creates a continuous, high-frequency agitation that causes the rope to vibrate, creating visual standing wave patterns.
- Acoustic Resonance:
- Setup: Place a string under high tension.
- Action: Use a speaker to play a specific frequency (sound wave) near the wire. If the frequency matches the string's natural frequency (), the string will resonate and vibrate on its own, a principle used in musical instruments.
Key Principles:
- Tension: The rope must be taut; higher tension increases the vibration speed.
- Resonance: The forcing frequency must match the natural frequency of the rope.
- Nodes/Antinodes: The vibrating rope will form standing waves with fixed points (nodes) and maximum displacement areas (antinodes).
刁卿蕙 於 2026/02/17 13:11 回覆
