| 摘要 |
There is provided an infra-red radiation source which comprises a tube of infra-red radiation transparent material containing an electrical conductor formed of carbon fibres, which is connected across an electrical power supply. The tube is sealed and may either be evacuated or filled with a gas such as argon at sub-atmospheric pressure. This provides a radiation source with a fast response time, operable at temperatures up to 1200 DEG C for example. |
