Search found 10514 matches

by Richard Hull
Wed Dec 13, 2017 2:49 pm
Forum: Images du Jour
Topic: Loads on roads
Replies: 2
Views: 67

Re: Loads on roads

I see these transports of liquid gases a number of times passing me on the highways. I have seen liquid ammonia, Carbon dioxide, oxygen, nitrogen and Argon. Of all such transports, Argon is not seen often. Argon is an extremely inexpensive as a gas. 1% of the atmosphere and every breath we take is A...
by Richard Hull
Wed Dec 13, 2017 6:16 am
Forum: New User Chat Area
Topic: X radiation exposition
Replies: 11
Views: 173

Re: X radiation exposition

A 50kv demo fusor! I doubt there is any good instrumentation on this system and no real images or data put forth on the system, its power supply or instrumentation. Sounds unbelievably whacky to me. A good ion chamber setup for x-ray detection is the real time true arbiter here. Dosimeters only tell...
by Richard Hull
Mon Dec 11, 2017 1:01 am
Forum: FAQs: Fusor Construction & Operation
Topic: FAQ - A new fusor Construction paradigm for 2018
Replies: 2
Views: 107

Re: FAQ - A new fusor Construction paradigm for 2018

I corrected David Dwyer to Robert Dwyer in my FAQ... Sorry 'bout that. I mentioned the arcing issue in the FAQ as possible being 'terrfying". It might limit things a great deal and that is why I also mentioned smaller systems will demand a lot more of builder in the form of critical attention to suc...
by Richard Hull
Sun Dec 10, 2017 9:41 pm
Forum: FAQs: Fusor Construction & Operation
Topic: FAQ - A new fusor Construction paradigm for 2018
Replies: 2
Views: 107

FAQ - A new fusor Construction paradigm for 2018

"Mine is bigger than yours" .....This "old saw" might be headed for the amateur fusion waste bin. Just a very few years back, would-be fusioneers of limited means began to actually do fusion in smaller conflat tee's and 4 or 6 way crosses. They rarely did much fusion, but they did do fusion. Within...
by Richard Hull
Sun Dec 10, 2017 8:52 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Gamma Spectacular Neutron Counting
Replies: 10
Views: 243

Re: Gamma Spectacular Neutron Counting

With a smaller volume 3-5 CPM background might be about right. The real test at 1 CPM background you have now is to use the system with your source. What makes up the background background is fairly unimportant as long as it is low and your count with a known good source is 10-20 times more. Run a t...
by Richard Hull
Sun Dec 10, 2017 8:42 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Robert Dwyer Fusor Progress
Replies: 27
Views: 2173

Re: Robert Dwyer Fusor Progress

Actually his pressure might not be high. It depends on his gauge, of course, but we have seen 100% of these small cross chambers running at unheard of pressures. They seem to be extremely successful which assembled well and once the operator get his "sea legs" in operating his fusor. I am just about...
by Richard Hull
Sat Dec 09, 2017 7:16 am
Forum: FAQs: Neutron - Radiation Detection
Topic: FAQ - X-rays, X-rays, X-rays....A tutorial
Replies: 0
Views: 89

FAQ - X-rays, X-rays, X-rays....A tutorial

I do not like starting a FAQ in an imperious, condescending manner, but not enough to not do it. It seems we have the usual dunderheads arriving here refusing to consult the FAQs. But far more often, refusing to be pro-active and become involved in what is termed "self-directed learning" outside of ...
by Richard Hull
Sat Dec 09, 2017 7:09 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor Repair
Replies: 2
Views: 182

Re: Fusor Repair

Good luck with the detector working out for you.

Richard Hull
by Richard Hull
Sat Dec 09, 2017 7:05 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Robert Dwyer Fusor Progress
Replies: 27
Views: 2173

Re: Robert Dwyer Fusor Progress

Your figures sound about right. However, voltage and current are just part of what you should be reporting. You need to always quote the pressure of the flowing D2. (time of run- precise, pressure- avg., voltage- avg., current- avg.)....Most all fusors working at their maximum will have small voltag...
by Richard Hull
Sat Dec 09, 2017 6:47 am
Forum: New User Chat Area
Topic: How dangerous are X rays?
Replies: 5
Views: 159

Re: How dangerous are X rays?

Why don't you read the extant, rather complete FAQ in the radiation forum on x-rays??? Bob is correct on all points. X-rays that can burn the skin are all below 30kv and most fusor SS metal shells are .060" or more in thickness. The average Fusor metal shell goes transparent to x-radiation at about ...