Crookes Y tube

Very rare Y shaped Crookes tube with three terminals to show that the cathode rays are produced perpendicular to the terminal and travel in straight lines.

Category:

Entertainment

Tags:

• Crookes
• Geissler
• Tube
• Discharge
• induction
• coil
• high
• voltage
• physics
• tesla
• gas
• science
• x-ray
• steampunk

[Radioactive897]

Hello,

I would really like to purchase a crookes tube but im not sure were to get one. Do you know?

[AlastairWright]

I sometimes have vintage tubes for sale. You can also buy modern Chinese made Crookes tubes from Sci-Supply



[JonasClark]

The knob should be for adjusting the spark.

[AlastairWright]

Maybe he means the switch which I flip back and forth? That one reverses the polarity. The point of the Y tube is to show that the cathode rays are emitted perpendicular to the negative pole regardless of where the positive is. The cathode rays become visible when they strike the glass and produce the green glass fluorescence. That's why different branches of the Y light up green depending on which terminal is negative.

[magx1]

How is the output rectified? I thought it was X-rays that produced green fluorescence when striking glass?

[AlastairWright]

Cathode rays (electrons) produce X-rays when they strike glass which makes the glass fluoresce green. The output isn't rectified. An induction coil is used so the output has a polarity.

[hubzcaps]

that power supplys gap needs work yo

[udaffrzn]

Агрегат)))

[orangetide]

that would be a transformer. an induction coil operates on DC. thus letting you have polarity, making these experiments possible.