# Crookes tube

> early type of cathode ray tube

**Wikidata**: [Q1537374](https://www.wikidata.org/wiki/Q1537374)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Crookes_tube)  
**Source**: https://4ort.xyz/entity/crookes-tube


## References

1. Freebase Data Dumps. 2013