評論
打印
Today, however,
然而今天
NASA physicist Friedemann Freund
美國宇航局的物理學家斐迪曼·弗羅因德
believes he may have found the answer.
相信他可能已經找到了答案
Gary, will you tell us when you make contact?
加里 閉合觸點的時候請告訴我
Now, it starts.
開始了
In 2005, Freund made a peculiar discovery
2005年 弗羅因德發現了一個奇怪的現象
that if you crush a rock to almost breaking point,
如果撞擊一塊石頭接近達到其碎裂點時
it produces a tiny electrical current.
將產生一股微小的電流
Now, we are already driving
現在 我們讓這塊石頭
something like four nanoamps through this rock,
產生了4納安培的電流
the pressure increases more and more,
隨著壓力越來越大
the current increases,
電流增加
now the pressure has already reached
現在壓力已經達到了最大值
its maximum value and the current will stay up there,
電流會保持在這里
and as long as the load stays on the rock,
而且只要石頭仍有負荷
the current will continue to flow,
電流將會持續存在
and that is the simulation
我們相信這個實驗
for what we believe to be happening in the Earth
模擬了地震發生前
prior to an earthquake,
巖石斷裂前
before they rupture.
地球所處的情況
If you can imagine
可以想象
that you have a cubic kilometre of rock being stressed or
如果一塊1立方千米的巖石被加壓
the currents translate into thousands, ten thousand,
電流會轉化成上千上萬
sometimes hundreds of thousands of amperes
甚至數十萬安培
that could flow out of a cubic kilometre of rock.
流出這1立方千米的巖石
