英文字典中文字典51ZiDian.com

中文字典辞典英文字典 a b c d e f g h i j k l m n o p q r s t u v w x y z

安装中文字典英文字典辞典工具!

安装中文字典英文字典辞典工具!

How is a Lichtenberg figure created? - Physics Stack Exchange
Using Wikipedia’s language, lightning is a three-dimensional Lichtenberg figure Reading Wikipedia’s section on Modern 3D Lichtenberg figures, a piece of acrylic (or glass) is impregnated with electrons from a linear accelerator When this acrylic is made to discharge, a “beam tree” is formed that is absolutely beautiful
Comprehensive book on group theory for physicists?
I am looking for a good source on group theory aimed at physicists I'd prefer one with a good general introduction to group theory, not just focusing on Lie groups or crystal groups but one that c
thermodynamics - Why is air pressure different between the inside and . . .
If your internal pressure is 10 hPa (or 1000 N m2) higher than outside then your outside door (area about 1 5 m2) will need a force of 1500 N to prevent it being blown out which is about 150 kg or 350 pounds Similarly your windows and walls have even larger areas and couldn't possible withstand the pressure So I have to question your calibration and is it valid for different temperatures? It
Why is velocity a vector? - Physics Stack Exchange
Velocity has a magnitude and a direction and thus it is considered a vector But from linear algebra perspective, a vector is an element of a vector space A set of mathematical objects can be a ve
On the properties of $\Delta$ baryons - Physics Stack Exchange
Further, since their symmetry is not as simple, being mixed (both spin and isospin-wise, behold), the proton, by contrast, cannot be described in as simple abbreviated manner! Good textbooks (Lichtenberg; Fayazuddin and Riyazuddin, Ch 6; ) go through this in excruciating detail
Reason for strange canyons of dust on the cooling platform
2 They seem to be Lichtenberg patterns Quote "After discharging a high voltage point to the surface of an insulator, he recorded the resulting radial patterns by sprinkling various powdered materials onto the surface
How is the speed of electricity determined? - Physics Stack Exchange
Lightning is a progressive converting of air into plasma In other words, lightning is actually a "lichtenberg figure" made of nitrogen-oxygen, rather than being made of damp wood These wood-fractals are made by converting insulating wood into conductive carbon paths, while lightning is the converting the insulating air into conductive plasma
Why does the gas get cold when I spray it? - Physics Stack Exchange
When you spray gas from a compressed spray, the gas gets very cold, even though, the compressed spray is in the room temperature I think, when it goes from high pressure to lower one, it gets cold,