For this experiment, I will be creating a cathode ray tube, which can be extremely difficult to do. A cathode ray tube consists of a vacuum along with a cathode, an anode, and a power supply. The ray is created from the electrons that naturally pour from the cathode (which is heated by the power supply) into the vacuum. The electrons hit the anode (which is positive; cathode is negative) and when it hits together, it glows. Here is my proposal for this lab. If I can pull this off, it will be a 100 pt. lab.
Update: This lab is very very difficult. I have every material except for one which is a steel brake line from a car. I am not sure if I will finish this lab or not because it is really hard and time consuming. I am hoping to do this soon, but during this section, it was too difficult.
The overall history of cathode ray tubes is really interesting. Cathode ray tubes are used to create images in televisions or computer screens because of the electrons that deflect of of the screen. Like most electrical things in history, it used to be much larger than it is now and much more complicated. They were not prevalent in televisions until Germans installed them in 1934. The original cathode ray tube was used to just deflect cathode rays, but with the intelligence of many scientists, they were able to make geometric shapes on screens in 1907. This was the mark of the first time the cathode ray tube was used as a means to create a television screen.
There are actually very serious safety precautions with this lab. The glass isn't lead glass which is used in actual professional cathode ray tubes, so there is a great chance that the glass may explode. This is due to the large amount of pressure that the vacuum produces on the inside of the glass. This is why, if I were to go through with this experiment, we would have to do this in the fume hood, sealed shut.
At this point, I am not very far into this lab. I have a glass beaker-like jar that Andrew drilled a hole into. This hole is for metal wire to go through. The process of cleaning and drilling a hole into the jar took a day so I am anxious to go through a 13 step lab with limited time. Pursuing and completing this lab would definitely be a feat, so I do want to do it but it is stressing me out. From here, I think I am just going to play it by ear and not stress myself out. Meaning that if I am comfortable I will take the challenge, but if it will be more detrimental then beneficial I will probably not pursue it.
The overall history of cathode ray tubes is really interesting. Cathode ray tubes are used to create images in televisions or computer screens because of the electrons that deflect of of the screen. Like most electrical things in history, it used to be much larger than it is now and much more complicated. They were not prevalent in televisions until Germans installed them in 1934. The original cathode ray tube was used to just deflect cathode rays, but with the intelligence of many scientists, they were able to make geometric shapes on screens in 1907. This was the mark of the first time the cathode ray tube was used as a means to create a television screen.
There are actually very serious safety precautions with this lab. The glass isn't lead glass which is used in actual professional cathode ray tubes, so there is a great chance that the glass may explode. This is due to the large amount of pressure that the vacuum produces on the inside of the glass. This is why, if I were to go through with this experiment, we would have to do this in the fume hood, sealed shut.
At this point, I am not very far into this lab. I have a glass beaker-like jar that Andrew drilled a hole into. This hole is for metal wire to go through. The process of cleaning and drilling a hole into the jar took a day so I am anxious to go through a 13 step lab with limited time. Pursuing and completing this lab would definitely be a feat, so I do want to do it but it is stressing me out. From here, I think I am just going to play it by ear and not stress myself out. Meaning that if I am comfortable I will take the challenge, but if it will be more detrimental then beneficial I will probably not pursue it.