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Flutter: Build A Chat Application from Scratch (Part-3) | Connect to Firebase (In Bahasa)
hello friends, hope you doing well in this video, we will connect our Chat Application to Firebase and also I will explain what are the features we use for our Chat Application In the previous video, we had created a design for chat view and also chat item view If you haven’t watched the previous video, you may find a link in the description alright here, I already opened firebase console we will start to create a new project we will give the name of the project App Chat and click continue and I need you to know that in this video we will not make any changes to the code that we had created before.
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EnergyTransition-04 Nuclear Energy: The Solution?
Hello everybody! I would like to welcome you to my next lecture today and we will ask the question if nuclear energy is the solution to the world energy problem. if you look at my first diagram here you see the energy consumption, as I showed you already in my last lecture. this time it is plotted from 1965 to 2015, so exactly 50 years, so what happened in the last 50 years about energy?
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GNOME 3.36: How many keyPresses to Reboot?
This sounds like a stupid video, but maybe it isn’t! Look what I mean! The first and fastest way is to press “Ctl+Alt+Del”, and I will count this as a single keystroke. Then right arrow, 2 keys. And Enter to restart. So, in total 3 key-presses. Three keys is the fastest way, and next I will restart from Shell Overview. Super to open Overview, one key. Type “reb”, that’s the minimum search to get the entry, 4 keys.
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Can This Disruption Become a Possibility? 🙏 With Sadhguru in Challenging Times - 12 Apr
Sadhguru: Namaskaram! Namaskaram to everyone.
08:11 - Bit early in the evening, we see some frogs are calling out.
08:22 - That reminds me. It once happened…
08:34 - I’m waiting for the quack. It once happened, a rabbit was romping around, spring time you know, mad as a March Hare, but then he heard a frog making desperate calls as if there was a pandemic.
09:30 - So, the rabbit went about investigating, where is he calling from.
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Switching off lights for 9 mins | Grid Failure? Why & how was it managed then? Simplified Analysis
hello guys this is Vivek here I welcome you all to my channel today in this video I will discuss on this topic called the consequences of certain unloading on power plants as we all know on 5th April 2020 our Honorable Prime Minister made a request to all of us to voluntarily switch off our lights for a duration of nine minutes following this request some concern was shown by various power system engineers and power system operators and they told us that this might result into a possible blackout however as the situation was known beforehand they took various initiative in order to avoid any possible blackout so in this video I will discuss why such concerns were being made and what could have gone wrong if the whole event was unknown to the power system operators and I will also discuss about the measures they took in order to avoid the blackout let’s get started but before we begin make sure you subscribe to our channel if you haven’t already and press the bell icon to receive the notification of every single video I make now in order to understand the consequences of unloading on power plants we need to have overall idea about power plants right in India there are various means by which power generation is done there is coal based thermal power plant there is gas there is nuclear there’s also high hydroelectric power plants as well as the renewable resources but among this the thermal power plant or the coal based thermal power plant is the most important why because it is itself a responsible for meeting more than 50% of the entire demand in our country here you can see this is the coal based thermal power plant this is total thermal you can see it contributes sixty two point eight percent of the total demand out of which fifty four point two percent comes from coal and one point seven percent from lignite and other resources are here as you can see so coal based thermal power plant as you can see is the most important source of power generation in India and also the impact that we were discussing a while ago has more impact on the coal-based thermal power plant hence I will focus on the coal based thermal power plant here now to understand what the consequences or what can go wrong if there is a sudden unloading we have to understand how coal based thermal power plant works in a coal based thermal power plant the two most important raw material is the coal itself and water what is done is that there is a drum something like this called boiler drum as the name says boiler means it is used to boil the water and convert it into steam so coal is burnt inside this drum okay and that is used to boil water now this water that you are seeing is collected through various pipes and with the help of nozzles okay nozzles look something like this so with the help of nozzles it is made to hit the turbine blade so what is the turbine turbine something looks like this like a fan or something okay which has the aerodynamic shape these are blades so it looks something like this so the high-pressure steam that is coming out of the boiler drum is made to hit the turbine blades and this causes the rotation of the turbine now the shaft of the turbine is coupled to a generator causing the rotation of the generator hence generation of electricity so this is the basic principle upon which the coal based thermal power plant works now we need to understand the generator that we are talking about this generator is an AC generator which means it works on the loss of electromagnetic induction right one such law is the Lenz law what does Lenz law says the Lenz law says that the EMF induced in a conductor is such as it opposes the very cause of its own creation now what does that mean here that the less according to Lenz law the EMF generated from the generator will try to stop the cause by which it has been generated okay now what is the cause of generation of the EMF the generation of EMF is because of the rotation of the generator so eventually it will try to stop the generator from rotating so that no EMF is generated so in order to do that let’s see what happens now let me make the picture of entire thing happening so this is our steam and that steam is coming into the turbine this is how indicate turbine turbine is also called expander hence this is the shape it has so it comes to turbine and from turbine the generator is coupled something like this this is a coupler and the generator is coupled here right and the generator is causing generation of electricity now this turbine is let’s say producing a mechanical torque in this direction causing the rotation of the revolt or bow generator system now the generated EMF will try to oppose this and because of that it will generate a counter EMF in this direction which is which you can say a hypothetical torque but it is generated in that direction in opposite direction so this is our mechanical torque essentially and this is our electrical torque in the opposite direction now as both the systems are coupled we can say that both of them are rotating at the same angular velocity which when multiplied to this torque causes torque times angular velocity which is power so this is our electrical power and this is our mechanical power also we can say this is the supplied power P m and P is the demanded power that is whatever the demand is on the generator hence P can be called as the demand power so eventually what is the relation between the supply and the demand well let’s say if the demand is increasing so that means PE will increase increase in PE will result in to increase in electromagnetic torque or the counter mechanical torque this counter mechanical torque is also behaving as the controlling torque right because it is controlling the real mechanical torque so that the whole system remains in a stable position so increase in P means increase in te and if PE is increasing that means the speed of the turbo generator system will reduce because that’s what the generator wants so in order to overcome this effect of deceleration of the whole system more amount of esteem is required so that the Macan Girl Talk overcomes this resistance from the electromagnetic talk and it keeps on rotating the generator hence supplying towards the consumer load so this is how the whole system works now that’s what we discuss till now about the whole thing and we saw everything about the turbo generator system that we need here now what is the problem the problem here comes if let’s say the whole scenario was unknown at 8:55 p.
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Como proteger el mundo en 5 segundos
Nowadays, we consume much more resources and energy than we need, but do we have time to solve it? Every day, over 75% of unnecessary energy is consumed by not taking advantage of natural light, use sunlight instead of light bulbs. 90% of office waste is paper and cardboard, check documents with a computer and use paper and pen only when necessary Coffee is used primarily by students and office workers, and 600 billion disposable cups are consumed annually, use a thermos, and bring coffee from home.
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La Informática: Promotora de un mundo mas sostenible
CAMELOPARDALIS, THE PROGRAM, YOUR PROGRAM Realized by: Javier Puras, David Romé and Ignacio Jorquera Today, in Camelopardalis we have attended a seminar where experts will explain to us about Production and sustainable development In few moments, we will stay with them, and those experts will explain us about the most innovative technologies of this moment ¡Pay attention! Here you will be shown how to avoid execc production thanks to the Cloud.
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Accessibility in SwiftUI
Hi I’m Rob. This is my dog Bella she wanted to be in the video as well. In March 2019 I was supposed to be attending CSUN assistive technology conference where I was due to be speaking about some of the changes that Swift UI has brought and some of the ways that improves accessibility in iOS apps unfortunately because of Covid-19 I wasn’t able to attend that conference and I wasn’t able to speak so I thought I’d make a version of the talk and upload it to YouTube so I would be find it useful and all of this talk it based on some blog posts and guides I’ve written on swift UI and how that makes accessibility much better and that’s all available at mobilea11y.
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How To Get A Invisible Avatar & Username On Discord
INVISIBLE USERNAME Just want to say this before the video start: You are doing this at your own risk. All of this offer I’m going to show you today is provided as-is with no warranty. None of this is endorsed by Discord & this video is not sponsored by Discord. Discord Or QzyXXV is not responsible for damange or anything while doing this. This video is being made solely for educational purposes only.
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Ukraine fights coronavirus
In Kharkiv, doctors have contrived a way to save COVID-19 patients using an ordinary plastic bag This method, which was used in the 90s to save hundreds of patients, has come in handy again amid the critical shortage of ventilators The Kharkiv Regional Children’s Hospital for Infectious Diseases has still not received additional ventilators They only have seven. So doctors pieced together a makeshift for the so much needed device.