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What prompted early scientists to propose that the ray of the cathode ray tube was due to the cathode?
The electron had already been discovered. It took little imagination to "see" that the cathode ray was the beam of electrons that originated from the cathode. And the beam was controlled using techniques based directly on what was correctly understood about the electron. The cathode ray could only be an electron beam generated at the cathode. Conventional elctric current flow is usually thought of as flowing from positive to negative, but at the quantum level; due to electrons having a negative charge; technically they really flow from negative to positive, and this is apparent in the cathode ray tube. Its the negatively charged electrons that glow in a cathode ray tube, and do so from the negative terminal, or cathode, hence the name.
How does copper conduct electricity?
Copper conducts electricity by "musical electrons" like other conductors do. Let's look at copper and see what's up. Copper atoms in a copper wire all form some kind of metallic crystal structure. Not all the electrons in the valence shells of the copper atoms are "locked in place" in this structure. They are free to move around, and are said to be "free electrons" in this application. As they are not "bound" in the structure, the electrons can be made to move fairly easily. They can contribute to current flow. If we apply a voltage across the wire from end to end, electrons will enter one end of the wire and electrons will emerge from the other. Not the same electrons, mind you. Put some in one end, some come out the other. It could also be said that some of the electrons of the copper are at Fermi energy levels that are in what is said to be the "conduction band" for copper. The conduction band is the minimum energy level necessary for electrons of a given material to be in to support conduction in that material. If the Fermi energy levels of the valence band electrons is up in the conduction band, then that material is a conductor. Copper is this way.
How could strontium become a noble gas?
Strontium can have a full electron shell noble gas state if it loses two of it's electrons.
What are some good psychological thriller independent films?
There are two specifically that are good for the abstract themes explored and extreme elements, I cannot say to much, because anything could possibly give away the turns, but The Chaos Experiment and The Killing Room deliver.
What does this quote mean great works are performed not by strength but by perseverance?
That sounds like it might mean like if you didn't have a bunch of strength you could use perseverance and confidence to get through and try your hardest.
What did JJ Thomson measure?
his important work was cathode ray experiment . he also discovere the natural radioactivity of pottassium.In his second experiment, he investigated whether or not the rays could be deflected by an electric field.in the third experiment he measured the mass to charge ratio of cathode rays by measuring how much they are deflected and how much energy they carries.
What prompted early scientists to propose that the ray of the cathode ray tube was due to the cathode?
The electron had already been discovered. It took little imagination to "see" that the cathode ray was the beam of electrons that originated from the cathode. And the beam was controlled using techniques based directly on what was correctly understood about the electron. The cathode ray could only be an electron beam generated at the cathode. Conventional elctric current flow is usually thought of as flowing from positive to negative, but at the quantum level; due to electrons having a negative charge; technically they really flow from negative to positive, and this is apparent in the cathode ray tube. Its the negatively charged electrons that glow in a cathode ray tube, and do so from the negative terminal, or cathode, hence the name.
Where are the elements located in electrons?
Electrons are elementary particles that have not been further subdivided by any accelerator or experiment in modern physics. String theory, of course, predicts that electrons could be made of smaller vibrating strings.
The emission of electrons in high-vacuum tubes is caused by?
The heating by the filament causes the electrons to "boil off". Edison noted this phenomena and it was later picked up by Fleming who used a "grid" which could control the flow of the electrons by introducting a repelling field between the Cathode (heated element that emitted the electrons) and the anode that attracted the free electrons, thus the "Fleming Valve" was invented (the vacuum tube.
Who performed an experiment that refuted the spontaneous generation of life?
Hitlers personal surgeon. ( i guess you could say Hitler)
is it true that an experiment is meant to prove that the hypothesis is correct?
An experiment is performed to generate more data. If the data proves to not support the hypothesis the experiment was still useful. You could reproduce your experiment to see if it is performing the way it should. After you have confirmed the experiment is performing correctly you then could devise another experiment to further test your hypothesis or accept the result and revise your hypothesis.
What is a modern explanation of cathode rays Physics A-level help?
Cathode rays are now known to be a beam of electrons. When early experimenters were investigating the electrical properties of gases, the found glows filling the tube as the gas pressure was reduced. Eventually, at very low pressure, the glow disappeared and it became evident that something leaving the cathode caused a glow in the glass behind the anode, whose shadow could be seen in that glow, so clearly something was leaving the cathode and striking the glass.
How would the result of Thomsons experiment change if the beam were a stream of neutrons instead of a stream of electrons?
If the beam were a stream of neutrons instead of electrons, Thomson's experiment could not have been conducted as neutron beams do not produce deflection in electric or magnetic fields like electron beams do. Neutrons are neutral and would not be affected by the fields in the same way as electrons, leading to different experimental outcomes.
What did scientists conclude from observing that within a cathode tube cathode rays could move a paddle wheel placed in their paths?
Scientists concluded that cathode rays were negatively charged particles that carried momentum. They inferred this from the movement of the paddle wheel, which indicated that the cathode rays possessed kinetic energy and could transfer their momentum to the wheel as they collided with it.
How was the electric field used to determine the charge of the cathode ray?
The electric field was used to deflect the cathode rays in a cathode ray tube. By measuring the amount of deflection and knowing the strength of the electric field, the charge-to-mass ratio of the particles in the cathode rays could be calculated. This allowed for the determination of the charge of the particles in the cathode ray.
J j Thomsons experements?
In 1897, Thomson set out to prove that the cathode rays produced from the cathode were actually a stream of negatively charged particles called electrons. (See Figure 1.8 in the textbook for Thomson's experimental setup). From Maxwell's theory, he knew that charged particles could be deflected in a magnetic field
Scientists performed an experiment to determine whether there is a connection between learning ability and food They took two groups of 20 mice each all from the same purebred strain The mice you?
the experiment could be repeated with the same mice
