nick leigh said:For my year 12 physics EEI (extended experimental investigation) i need to develop some sort of experiment with variables i can change to retrieve data from. I have a basic cathode ray tube from a few months ago much like the one in this video: . Does anyone have any idea of what variables i could change with this experiment? (Sorry for my english. it's my second language)
Thank you
A cathode ray tube is a vacuum tube that produces images by manipulating beams of electrons onto a fluorescent screen. It was commonly used in older television sets and computer monitors.
A cathode ray tube works by using a cathode (negatively charged electrode) at one end, and an anode (positively charged electrode) at the other. When a voltage is applied, it creates a flow of electrons from the cathode to the anode. These electrons are then focused and directed by magnetic fields onto a fluorescent screen, creating an image.
A cathode ray tube is composed of a cathode, anode, electron guns, focusing and deflection coils, and a fluorescent screen. The electron guns emit and control the electron beams, the coils focus and deflect the beams, and the screen displays the image.
One advantage of using a cathode ray tube is its ability to display high quality images with good resolution and color. It also has a fast response time, making it suitable for applications such as gaming and video playback. Additionally, CRTs are relatively inexpensive compared to other display technologies.
One major disadvantage of using a cathode ray tube is its size and weight. CRTs are bulky and heavy, making them difficult to transport and limiting their use in smaller devices. They also consume more power compared to other display technologies. Additionally, CRTs are known to produce radiation, although modern CRTs have safety measures in place to minimize exposure.