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Good to know!! 😃🔥

Yeah that had me scratching my head when I made this video too. I looked into in at the time and I think I found the answer. But this isn’t an area I’m really good with, so take it with a grain of salt. But from memory the reason why the blue light has less energy is because of the solar radiation spectrum and how the light travels through our atmosphere. In simple terms our sun emits energy across a spectrum and then some of it is absorbed in our atmosphere. This leaves more energy in the red and infrared part of the spectrum than the blue once the light reaches sea level, and the energy difference is a result of there being more red light available than blue light rather than their actual energies. I was going to include a whole section on this in the video. But it’s really not an area that I’m confident in speaking about. Hope that helps.

Thanks! This comment section is as good a place as any! 🙂 Also if I don’t know the answer someone else might be able to help out 🙂👍🏽

Ok.... combustion in a multi chamber crematorium.

This illustration makes alot of sense, but I'm sometimes getting incomplete combustion.

When I open a door and I getting a backdraft or a flash over? Sometimes I can hear her take a breath in just before flames come out the door.

Thanks! Glad you liked it!

That sounds interesting! So do you use smoke stopper blankets or just door control to help starve the fire on entry?

@@MattDavis5 Yeah we call them smoke curtains we throw them on entrances and exits. Its drilled into us to close every door we come across, and for members of public to close every door at night or when spotting fire.

Yeah cool. How have you found it using the curtains? I like the idea of them, but haven’t had the chance to use them at a real fire. And we are much the same with closing the doors. Both for our firefighters and for our public awareness campaigns 👍🏽

@@MattDavis5 Quite useful, seconds to put up, prevents as much air going in instead of leaving door wide open because of the lines/hoses going in. Can sometimes flap about a bit in high winds though 😅. Apparently they are kinda cheap so would definitely recommend for every department, adds another tool to the belt.

Thanks!! I’m glad you like it! And yes it can be a real challenge to maintain training and stay consistent sometimes. So nice work being proactive 😀👊🏽 Also I’ll be making a follow up video with one of the key concepts next. It was just easier to seperate it into another video 🙂

@@MattDavis5 thank you, thank you ever so much for your work! Anyone with any interest in fire safety will gain SO much from your episodes! Not just those in industry, but normal people at home can get a lot out of these videos. Cheers, you're information sharing is life saving 🙏🙏🙏

PS my autocorrect has a mind of it's own 🤣

Thanks! And Sorry!! 😆 It takes me a while to make them sometimes! I have no idea how some people can post every week!! 😀

That’s not ideal! Unfortunately you are not alone. There are plenty of places around the world facing air quality issues. Make sure you look after yourself 🙂

Um… you’re welcome? 😂

Great point, I hadn’t thought of argon! (had my head stuck in thinking of what is available on the fire ground). 👍🏽

@@MattDavis5 they are available mostly used in places like server rooms, they come with there own set of challenges/problems. they arent very practical out in the open like where you would find a burning car. i personally had the thought that if mag fires in cars became a big problem having a mobile fold out room that could be pumped full of argon would be the way to go.

Yeah cool. I haven’t seen an argon gas deluge system before. I’ve seen a bunch of co2 and halon gas but not an argon. But it makes sense 😀 As for cars the problem has been dealt with by car manufacturers. These days they really only make small components with magnesium. But in some older cars (some old VW’s) had entire engine blocks of magnesium.. crazy stuff! Thankfully not much of around these days 👍🏽

@@MattDavis5 engines made of mag...dang I would like to see something bigger than a few grams burn. I have only heard of mag wheels being used in any abundance. I know that it's been largely abandoned in the auto world(for good reason). Now we have an entirely new beast to which I can only think of one way to put out. Argon gas wont take care of it either. Only thing i can think of is an even harder way to put out a nasty fire....ev battery packs. Any guesses on the best way to stop one(without just letting it run its coarse) cuz I only have one idea that I can think of.

Interesting question. There are oxidising elements other than oxygen e.g. chlorine that will sustain a fire. But for it to be considered fire I would think it would need to be some kind of oxidation reaction. But I’m not really sure about the wider implications to be honest.

Funny you should ask. I haven’t released it yet. But I am working on it at the moment. It will hopefully be out in the next few weeks 🙂

@@MattDavis5I have an assignment which must be submitted tomorrow 😅 I am using your videos to match the theory

Hi there. I’ll need to double check my facts here.. but from memory the reason why the blue light has less energy is because of the solar radiation spectrum and how the light travels through our atmosphere. In simple terms our sun emits energy across a spectrum and then some of it is absorbed in our atmosphere. This leaves more energy in the red part of the visible light spectrum than the blue once the light reaches sea level, and the energy difference is a result of there being more red light available than blue light rather than their actual energies. I was going to include a whole section on this in the video. But it’s really not an area that I’m confident in speaking about and it was also a pretty massive Segway haha. Hope that helps. If all else fails search for the solar radiation spectrum and you’ll start finding references 🙂

You’re welcome! I’m glad the video helped! All the best with the study 🔥

Thanks mate. Glad you like them 👍🏽 Yep I’ve seen a few of his videos. They’re great! Why do you ask?

@MattDavis5 I have only discovered him recently and some of his topics cover water stream applications. Some of the frustrations found in training fires vs real fires and kind of keeps receo priorities. But sells the point of monoxide being the most lethal and straight stream applications majority of time either interior or exterior are generally more effective. He then goes on to explain that rooms at super temperature their atmosphere can hold more total gas vapour so our droplets aren't exactly as effective due to early vaporisation. He's arguments are compelling in a way to me and I wondered what some one else like yourself thought of his arguments or points.

I’m not sure I’ve seen those specific videos. But I do know he is a big fan of straight streams and he makes some really interesting points. If you are interested in straight streams have a look as UL Fsri’s website. They have done some really interesting work with them in recent years as well 👍🏽 As for Carbon monoxide it is really a big hazard. But also not to forget about hydrogen cyanide, formaldehyde, benzene and a whole bunch of other nasty chemicals. In short smoke is bad news. I’ve spent a bit of time learning more about smoke composition and toxicity recently.. and the more I learn, the more I realise that there is a lot more to learn! Haha I guess from my point of view is that I’m always keen to learn new things. Be it new tactics or a better understanding of fire dynamics. It’s all interesting and gives more tools for the tool box 🙂👍🏽

You're welcome!

Thanks! I'll be starting work on the second part to this video very soon! (fuel vs vent control).

haha thanks! Much appreciated!

Thanks Mate! Yes there is plenty of it being used here too. But basements aren't as common in Australia, so we don't get as many basement fires with exposed beams. When they are used between floors they will normally be covered with plaster or something similar which provides some limited protection. However, I have seen them exposed under some houses which were built on pillars. But in those cases the fuel load is normally very low as is is not a liveable area. UL FSRI have done some really interesting work in the area. If you haven't already done so it would be worth having a look at their website. Cheers, Matt.

Thanks! Glad you like it!

Thanks!!

Thanks! That’s nice of you to say.

Thanks mate. I was lucky enough to visit your live fire training facility a few years back. It’s a great facility and the instructors really know their stuff!! Hope you enjoy the course!

Thanks mate. Great to hear! I’m actually working on a video at the moment that will include a section on construction 👍🏽

Thanks!

Getting forgetful these days!! 😄🤦‍♂️

Hi, it's not a term that comes alot. But it's closely linked to "thermally thick" and "thermally thin". Which are a bit more commonly taught. It's great to hear that you are enjoying the videos. I don't have a video on lithium ion fires... yet. I'm am slowly working towards one. Buts a pretty complex topic and I just want to make sure I try and do it justice 🙂

Mate, it’s a great calling. Being a firefighter is really a privilege. It’s great to hear how passionate you are about it. Thank you for your comment. It’s great to hear the videos are making a difference (they are a bit of work!). Never stop learning! 😀👊🏼

Great to hear! Our of interest can I ask are you pursuing it for firefighting, fire engineering or another goal?

You're welcome! Glad you found it useful! 👍🏼

Very cool! Great to hear they are coming in handy. Thanks for letting me know.

Thanks! And nice pick up! Yep I was meant to say surface area to volume ratio.. It's hard to edit videos once they are posted. But I'll pin a comment that adresses it. Thanks for letting me know 👍🏼

The labels?

@@MattDavis5 at the end, all the parts of what’s happening in the fire.

Ahh yes! And theres really more than that too!

There’s always more to learn! And you’re welcome!

That's probably fair to say. I remember back when I made this episode I was really struggling to get useable footage. I'd probably go about it a little differently now. But hopefully the concepts still hold up for you 👍🏼

Hi. Yep I agree. They really did and continue to do some really awesome work! The point of the video is supposed to be the importance of the latent heat exchange not a discussion about straight streams and diffusion nozzles. I actually try to avoid talking about tactics on this channel as tactics can always change as new research or better methods are developed (the nozzle dabate is a great example). Also I don't think anyone should learn tactics from a random person on the internet. But given your reaction I may have missed the mark. I'll take another look at the video and see if I can do a better job of it 🙂 Cheers, Matt.

@@MattDavis5 Ah gotcha, must have paid to much attention to the illustration. I must say though, your content is amazing. Went through your whole flashover series, great stuff!

Hi there, Arson is definitely a big problem. But talking about human behaviour is not something I am well versed on unfortunately.. It's more of a psychology problem rather than a fire science problem. But thanks for the suggestion!!

Thanks!! hopefully that will be coming in a video in the not too distant future (2024 sometime hopefully). There is some really interesting stuff to unpack with HRR!!

Thanks!

Thanks. Thats nice of you to say. Making these videos has really been a learning experience.. and there are always things i'd go back and change.. I appreciate the feedback!! Cheers, Matt.

Hi there. Thanks, I'm glad you like the video. I am slowly working towards making a video on reading smoke. I just have a few other videos I'd like to do first 👍🏼

Thanks! And you're welcome 👍🏼

Thanks 🙂