there is a very interesting physics experiment in the junior high school physics and thermal content: ”observe the sublimation and sublimation of iodine”!
flat mirror, foldable cardboard, laser pointer, protractor.
explore the magnetic field distribution outside the energized solenoid
in physics,the fine structure constant is a constant used to measure the magnitude of electromagnetic force in nature.electromagnetic force and gravity, strong nuclear force and weak nuclear force are called the four basic forces.pay attention to those who participated in the experiment,not necessarily the experimental results are correct,for incorrect experimental results,to analyze the cause of the error,this kind of wrong experiment is also a successful experiment,it's never said in science,only correct experimental results are meaningful,if so,those failed experiments of edison's bulb filament were done in vain,the experiment is successful as soon as it is done,that is a myth,not science.
according to foreign media reports,humans will soon have more understanding of time crystals,this strange phase of matter seems to break the time translation symmetry-until recently it was still considered impossible.this way you can control the molecule,and can inspire new technologies.
solenoid, small magnetic needle, glass plate, iron filings, power supply, switch, sliding rheostat, several wires.
however,according to a study recently published in "science advances",researchers at the university of south wales in australia have successfully made four observations of a quasar about 13 billion light-years away from the earth.it is believed that the value of the fine structure constant has changed from before.
the operating voltage of the electromagnetic dotting timer is below 6v,generally between 4~6v,it needs to be powered by the student's power supply; while the electric spark timer uses 220v ac voltage.
when exploring the phenomenon of light reflection,the positional relationship between reflected light, incident light, and normal.
what power does the top rely on,was it possible to maintain such a seemingly unstable state?could it be that gravity doesn't work on it?
2. different management methods
the reason why the top won't fall
雷根斯堡和苏黎世的科学家发现了一种引人入胜的方法,您可以用受控的力快速推动原子,因此, 一个分子的运动可以在不到一万亿分之一秒的时间内被编程。 2020-08-18
regular crystals are defined by their highly ordered atomic structure-in a sense,their atoms will repeat in space
1. the power supply used is different
看杂技的时候我们经常看到演员拉出桌子上的桌布,但是桌上的东西, 杯子或瓶子留在桌子上!in fact,there is nothing magical about it,of course this is not a trick,it's just that during this performance,the performer's hands and feet must be very flexible. right now,scientists have observed the interaction of two time crystals for the first time,this may be the first step towards using them for practical applications such as quantum computing. the difference between electromagnetic dotting timer and electric spark dotting timer
at first glance,the visual effect of this experiment is very good,the physical phenomenon is obvious-
physicists push the atom in less than one trillionth of a second
experiments to explore the law of light reflection
scientific inquiry and discovery
using small magnetic needles and iron filings,explore the shape and direction of the external magnetic field of the energized solenoid.but are there any crystals that can be repeated through time?this is a hypothesis put forward by nobel prize winner frank wilczek in 2012.later in 2016,these time crystals were created in the laboratory for the first time.
some people say that one of these two physics experiments is not rigorous,what reason?
eggs in the cup。雷根斯堡大学的物理学家现在表明,将光脉冲照在针上可以将其转变为超快的“原子手”。
electromagnetic dotting timer and electric spark dotting timer are two common timers.in the process of using, we should pay attention to the following differences.
physicists discovered that the constants of nature are changing,the universe may not be "isotropic"
when the top rotates vertically or tilts,why doesn't it fall down?although many people have played spinning tops when they were young,but you don't necessarily know the correct answer to this question.
explore the law of light reflection