[Amps] Alpha vs Henry

[Roger (sub1)]

On 4/8/2011 12:35 PM, Ron Youvan wrote:
> Gary Schafer wrote:
>
>> With IR how do you know if you are measuring actual tube envelope glass/seal
>> temp or the radiated heat itself?
>    I'm pretty sure IR is radiated from objects and hot air is not an
> object.  IR thermometer's accuracy is independent to of ambient air
> temperature.

Air is an object, just one that is difficult to hold in your hand. IR 
guns (and cameras) are used to measure air temp.

73

Roger (K8RI)