 Okay, I was really really almost done so then we get this then we get that again Okay, so No, I don't see yeah. Oh, it's happening. It's the same one second Okay No, no, it's fine Now it's time. No, no, no Disappeared it was okay, but then disappeared again It's the most unfortunate so sorry no problem. No problem. Yeah, this is happens of technology Yeah, it's much less safer than nuclear technology Imagine that what happens with reactors like this if you click like a fight or whatever Actually the last So, okay Yes, we don't hear you Yeah, I'm not saying anything. I finished my presentation Okay, thank you very much. Yeah. Yeah, we hear you. Thank you. Thank you very much I just was I had a comment on this that you say that Subcritical I mean, oh, sorry The delay neutrons can be considered as a external neutron source as in the subcritical Reactor but frankly, I don't agree because the number of delayed neutrons depends directly on the number of fissions in the reactor So it's not external independent source like in ideas. For example, it's depends So it's still connected directly to the number of fissions and number of other Yes What do you think? Yes, that is correct except in the I Yeah, that is correct. Of course that is correct Otherwise it wouldn't work. Otherwise you couldn't shift up the the energy the point is though that in the case of Of an accident or so for a very short moment the source is independent of the of the Of the power because it is delayed So it is actually it refers to some time in the past. So in that sense, it will be constant constant the constant source For the next few milliseconds and that is important. Yeah, I agree But it is a bit it is it is a bit semantics That I agree with that but the the fact is still that on on in on prompt neutrons The reactor is always a little bit so critical and you need to delay neutrons to make it exactly critical And that's what makes it that nicely controllable Okay, thank you. So now any questions or comment questions to Precursive equation and prompt neutron equations both are having very much time difference because that prompt neutron have a like a equation have a collection of second is 10 to the power minus Two or three second or eight second into the one minus a second while the Recursive neutrons whatever the neutrons coming from precursor delay neutrons. They are generation time is in second Also, the voice is not very clear if probably if you can type type In the chat, this would be great Any questions from here from the audience here? You know I have questions like why you you You explain is that you you like say you won't I think I Understand the question. Okay Can you hear me talk? Yes, we can hear you Can you hear us? Okay, I Can hear you. Yes, just a minute I couldn't hear you very well, but I think I know what you want to ask Can you hear me? Yes? Yeah, so the what you're saying is that the the prompt neutrons have a very short and Life or they appear immediately after the deficient in the order of 10 to the minus 8 seconds and the delayed neutrons appear of the order of seconds and you're saying that if you look at these equations You now try to solve a time-dependent equation that has a time scale of 10 to the minus 8 and 10 to the And then a few seconds, but actually that's not what you're doing You just assume that to prove prompt neutrons. They are all prompt So the only thing you have to worry about is the time differences between the different Delayed neutron sources and those time differences are not so big I mean, there's not 10 orders of magnitude difference there So even if you're with your fourth one, you can handle that is that was that your question? Yeah, that is that is true, sir But when we are solving that yeah, it's true But when we are solving that both the equations together that equations comes as like a stiff situations that interval we cannot take up very small as like a delay neutrons or prompt neutrons interval because for solving that equation we need I mean the interval time is very short Then the computational time will go very high Yeah, but how small do you want to make it you want to make it? Well, you can take one microsecond microsecond is 10 to the minus 6 for the delayed neutrons that is almost That's okay. And If you want to get to one Calculations per second. So that is not a problem. If you want to go back to 10 to the minus 8 Then or that that it becomes a problem, but you don't care about that. You only care. I'm sorry. I don't hear you Yeah, but for solving that that now I'll come same thing for that Delayed it wrong. So in that delay Okay, sorry this is for kind of maybe you can type in the chat and then I believe Adriana good answer also in the chat Please type in the chat so any questions here no if not I just have a question you you just Your I understand you are How to say I don't say as Advertising but you like this Molten salt reactors, but you decided in the campus to build gas-cooled reactors So what might as much easier why? Adriana Okay, like looks like Adriana is disconnected again We will like to send him for his lecture And now let's have a coffee break coffee break and we come