An electric field pushes a flame away from a burner in a recent Harvard experiment.
在哈佛的一项近期实验中,一个电场把火焰从燃烧器上推开。
The essential condition for the decay of the vacuum is the presence of an intense electric field.
真空衰变的基本条件是存在强电场。
In 1832, the year of Michael Faraday's discovery that a changing magnetic field produces an electric field, a young French engineer patented a new and more efficient waterwheel.
1832年,也就是迈克尔·法拉第发现磁场变化会产生电场的那一年,一位年轻的法国工程师为一种新的、效率更高的水车申请了专利。
So once the fibre is drawn the researchers apply a very high electric field to it, causing the molecules to align as the fibre cools.
因此,一旦选出合适的纤维材料,研究者们就会将其放于高电场中,让纤维分子在其冷却过程中形成一致性。
At the core of the motor are piezoelectric materials-special crystals or ceramics that change shape very slightly in the presence of an electric field.
这个马达的核心是压电材料-特殊晶体或陶瓷,这些材料在电场出现时形状改变非常小。
But if the dipoles form in the presence of an existing electric field, they immediately align along the same direction as the field.
但是,如果这些电偶极子处于电场中,他们就会立即沿电场的方向排列。
Finally, enter the demon, whose eye is a camera and brain a computer that controls the electric field.
最后,引进了这个妖魔,它的眼睛是一台照相机和控制电场的电脑。
That asymmetry makes the plastic piezoelectric: it changes shape when it encounters an electric field.
这个不均衡导致了塑料具有压电性,会随着电压的改变而改变形状。
The shape of the tower enhances its electric field, which in essence, initiates the lightning.
塔的外形增强了它的电场,在电场核心产生出闪电。
The shorter distance between those separated charges in an ultracapacitor translates to a larger electric field—and much more energy storage capacity.
超级电容中分离电荷之间的距离越小,形成电场的越大,储存能力也就越大。
That one tells you about the curl of the electric field.
那个关于电场旋度的方程。
The pore must produce a strong electric field to hold the DNA in place.
要想固定dna,纳米孔就必须产生很强的电场。
The electric field grabs the negatively charged DNA and holds it in place.
电场会“抓住”DNA,将它固定在纳米孔中。
It's an effect created by an electric field, that creates a singular pull on an atom and ultimately RIPS it apart.
它是由电场产生的效应,对原子进行单方面拉扯,最终撕裂。
So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.
还有方向,所以如果,你把粒子放在这下面,电场的方向相反,粒子会朝另一个方向运动。
Just to give you formulas, the force caused by the electric field is the charge times the electric field.
先给出一个公式,电场生成的力,等于电荷与电场之积。
It is a partial differential equation satisfied by the electric field e.
这是一个,由电场e确定的偏微分方程。
Previous experiments have shown that applying a constant electric field created small effects on flames, but Cademartiri's work used an oscillating electric field to greater effect.
过去的实验已证实,施加恒定电场于火焰上会产生较小的效应,而Cademartiri在工作中采用振荡电场得到了更显著的效应。
They are triggered by thunderstorms and are created when lightning from thunderstorms excites the electric field in the atmosphere above the storm.
它们是由雷暴雨所触发出来的,当时雷暴雨所产生的闪电激发了高于暴风大气层里的电场。
Some challenges remain, such as explaining where the background electric field that charges the particles came from.
某些难题依然没有被完全解决,例如如何去解释使微粒带电的背景电场从何而来?
They sort left from right versions using circularly polarised light, whose electric field corkscrews through space in a left or right-handed direction.
旋转偏振光被他们用来筛选左手性和右手性分子,这种光的电场以左手或右手螺旋形式在空间旋进。
Another way of growing snowflakes is to use an electric field.
另一种制造雪晶的方法就是使用电场。
For example, the electric field or gravitational field is given by the gradient of the gravitational or electric potential.
例如由重力势梯度给出的重力场,或由电势梯度给出的电场。
The energy within this circuit oscillates rapidly between an electric field in the capacitor and a magnetic field in the coil.
电容产生电场,线圈生成磁场,电路中的能量就在电场和磁场之间高速振荡。
He plans to nanoengineer their optical and structural properties using DC electric-field techniques, coupled with femtosecond and nanosecond laser processing.
他计划使用直流电场技术,结合飞秒与纳秒激光工艺,对它们的光学与结构特性进行纳米设计。
The particles are suspended in a clear liquid and are pushed around by an electric field created by transparent electrodes placed above and below the capsules.
这些粒子可以在透明的液体中悬浮,并受到放置在胶囊前后的透明电极产生的电场的作用,而来回移动。
As the switches are hit by a carefully timed sequence of laser pulses, a powerful electric field is created.
当开关受到分时激光脉冲连续撞击时,就会形成一个强大的电场。
An electric field created by adding impurities to the silicon splits the electron-hole pairs apart, which results in an electric current.
给分离的硅参入杂质电子区域就产生电子空穴对分离从而形成电流。
An electric field created by adding impurities to the silicon splits the electron-hole pairs apart, which results in an electric current.
给分离的硅参入杂质电子区域就产生电子空穴对分离从而形成电流。
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