bigclive Posted March 23, 2018 Share Posted March 23, 2018 Does anyone remember one of the earliest haze effects that was used in early nightclubs to create a very fine particulate haze in the air? They used a heated ceramic pot which was sometimes a ceramic cone with bare live external element wound round it (origins in scientific equipment). The cone or pot was loaded with sal ammoniac (ammonium chloride) which would liberate a vapour that then reformed into a solid in the air as a very fine dust with good optical properties. Totally non compliant with modern safety regulations as it could genuinely cause irritation for some people if used in excess. But my question is... What power rating were the heater pots? I remember looking at one many decades ago, but there was no data on it. Link to comment Share on other sites More sharing options...
Brian Posted March 23, 2018 Share Posted March 23, 2018 I have one somewhere, BNIB. It'll be my store but I'm not there until tomorrow. I'll dig it out (if I can find it). Link to comment Share on other sites More sharing options...
Simon Lewis Posted March 23, 2018 Share Posted March 23, 2018 Does anyone remember one of the earliest haze effects that was used in early nightclubs to create a very fine particulate haze in the air? I used to be a technician for a chemistry teaching lab. Every now and then, timetabling would schedule a business studies class in there... not an appropriate space for them, but our complaints weren't heeded. It was easier to unscrew the tops of the ammonium hydroxide and hydrochloric acid bottles and let the room fill with a glorious fine haze that rolled down from the chemicals rack.It emptied the room of unwanted students pretty fast... Link to comment Share on other sites More sharing options...
Brian Posted March 24, 2018 Share Posted March 24, 2018 Here you go... Link to comment Share on other sites More sharing options...
bigclive Posted March 24, 2018 Author Share Posted March 24, 2018 Ah, it's one of the bare open cones. Popular in America in a lab environment which probably explains the 120V rating. 660W is much higher than I was expecting. I'm pretty sure the one I saw in a UK venue was fully enclosed and designed for 240V. Link to comment Share on other sites More sharing options...
Brian Posted March 24, 2018 Share Posted March 24, 2018 I also wonder if their original use was in radiant heaters. There are some 'satellite dish' heaters on ebay in the US that have elements that look like my unit. Link to comment Share on other sites More sharing options...
sunray Posted March 25, 2018 Share Posted March 25, 2018 Here you go I'm going to make the claim that I remember a heater with a polished copper reflector on a heavy cast iron mount which had one of those, I even remember going to a shop in Chatham called Varleys around 1966 to 68 to get a replacement wire element which had to be carefully stretched so the coils were evenly spaced as it was wound along the length of the groove. The parallel sided versions were available off the shelf but the conical version was supposedly more efficient. Also I should still have a dummy load for amplifiers made around 1996 with a 750W element, from the same store, cut into 4 16ohm pieces and pop riveted onto steel brackets Link to comment Share on other sites More sharing options...
bigclive Posted March 25, 2018 Author Share Posted March 25, 2018 The heater versions were more of a cylindrical core wound with the heater coil. The cone version is designed to have stuff put inside it Link to comment Share on other sites More sharing options...
Brian Posted March 25, 2018 Share Posted March 25, 2018 Some are listed on ebay.com Link to comment Share on other sites More sharing options...
ojc123 Posted March 25, 2018 Share Posted March 25, 2018 Does anyone remember one of the earliest haze effects that was used in early nightclubs to create a very fine particulate haze in the air?unscrew the tops of the ammonium hydroxide and hydrochloric acid bottles and let the room fill with a glorious fine haze that rolled down from the chemicals rackAlways one of my favourites when I was teaching chemistry. Always had the wow factor. Link to comment Share on other sites More sharing options...
sunray Posted March 25, 2018 Share Posted March 25, 2018 The heater versions were more of a cylindrical core wound with the heater coil. The cone version is designed to have stuff put inside itAs I wrote - parallel sided were available off the shelf but the conical version was supposed to be more efficient.Presumably as it was 'facing' the reflector. Link to comment Share on other sites More sharing options...
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