See part 2: kzfaq.info/get/bejne/rcd7q5eDu9LDpWQ.html

That particular song has never sounded more appropriate.

THIS is why I present electronics classes to youngsters...it takes just ONE dad, or uncle, or teacher and ONE project and BAM! Future physicist!

Best Unintentional Use of Green Day Ever

Legitimately got teary-eyed with that song and the photo montage.

Perfect "time of your life"

oh man, you made me emotional w/ the random montage

I came for the science and I got the feels. Damn.

the plank of wood is probably where the term breadboard comes from, since people used literal bread cutting boards to build electronics

damn, been watching brady's stuff for pretty much 10 years or so now, it's really interesting to see how professor Moriarty has aged while still remaining as interesting and excited about science as always :D edit: later while watching the video I noticed you put in some old pics of him too! great!

So happy to see Professor Moriarty back on the channel again, his genuine childlike obsession with physics makes the videos so engaging.

Prof Moriarty always delivers quality content - going to do this with my kid once he is back from school!

Easily one of the best and most organic outros I've ever seen, to an absolutely great video. Thanks!

Thanks for the memory, The simplest crystal set I made was a 1950's Germanium point contact diode strapped across an old telephone magnetic microphone, with an aerial and ground attached to each side of the diode. With it, and no amplifier, you could hear the local AM radio station right through our house. It still works well, decades later. Crystal sets were the seed which inspired me to earn an Amateur Radio license, and to choose an electronics-related career.

Finally, the Mighty Moriarty!

I am a CERN scientist, and ham radio enthusiast, this is an AMAZING video, build by first crystal radio when I was 9yo, and Wow, I jumped of joy too when I hear the AM radio on that oxydized penny! I never thought was possible to get a diode so easily. Thank you this is your BEST videooooo

I was literally grinning through this whole video because it just exudes pure joy and excitement.

This is the best cry Green Day has ever given me.

This guy has such amazing energy you can almost feel his neurons firing and they do at very high frequency yet with flippant sharpness. Great!

"London Calling" the best way to start a video 😍

Absolutely great! We love you, Professor Moriarty!

Man Phil is such a gem

Taking a risk on KZfaq’s copyrighted music detection algorithm at the end there!

The silde show of pictures of Professor Moriarty you put over that Green Day song... brilliant. Just brilliant.

Always happy to see Professor Moriarty. You can't not admire his enthusiasm.

that ending got me right in the feels.

Still have my fathers crystal set which he built when he was a boy in 1932. Found it in the loft of his house after he died in 2011. I remember building crystal sets when I was young. There is something magical about radio, such happy memories.

I cannot give this enough 👍 It was experiences exactly like this that led me to electrical engineering.

Hey, that same book had also started me on a path to electronics hobby.

Ten years of my childhood in one video! I made many crystal radios, based largely on MRL designs. (Modern Radio Laboratories - which was neither a laboratory or modern, but just an old man who had spent a lifetime maximizing crude radio circuits and determining the most desirable wire gauges, insulating materials ((double cotton covered)), best galena crystal designs and cat whiskers (( a rod on a ball joint with a wood knob at one end and a spring at the other from which descended a high nickel wire of about 30 gauge to tickle the crystal)), etc.) One of his innovations (probably not his invention but he was insistent on it) was a second .365mf variable capacitor to tune the ground. It made tuning the set a lot like an early TRF Radiola - move one dial a little, then move the other a little... But on the Mexican border I could hear Chicago and occasionally the BBC! But only after midnight, when the local station went off the air. During the day it was the local station all across the dial. High impedance head phones were a must! Or connection to an amplifier, as you show here. I went on to one tube radios (valves in Britain) built from tubes I salvaged from old televisions found in the trash, and regeneration was like a Black Art - where a radio that had only a half dozen stations or less would squeal and suddenly have thousands! Ten 9-volt batteries taped together and wired together providing a 90 volt plate bias. Never went far into multi-tube sets because I couldn't work out resistance coupled stages. And then I grew up. I still have a lot of the parts, the wires, the coils, the tubes, the capacitors, the headphones, etc. in the garage. Hope I have a chance someday for a "second childhood" and to play with them again.

I like his enthusiasm :) This reminded me of the time I built a cat whisker radio back in the early '60 when I was a young child.

Me and my brother made a crystal radio from a commercial kit decades ago. We put the antenna wire in the attic, along the whole length of the house, and drilled a little hole in the ceiling to let the connecting wire through. I haven't been to that house in ages now, but I bet that antenna is still there. The thing worked like a charm btw.

Phil is just an amazing person. I love him.

This teacher is an absolute blessing

Old enough to remember Happy Days Young enough to have hope for the future because SCIENCE

The ending was emotional. A fitting music too !

oh man, I'm gonna cry, y'all

I tried to make a crystal radio when I was a kid. I came to the part of connecting the “cat’s whisker”; I went to my father and asked if we could get a cat...

Omg that got seriously emotional. You couldn’t have planned a better song played through a better radio for a better scientist. Beautiful

I LOVE radio! I'm a amateur operator in the states. I once talked to a gentleman in Ukraine from near Kingston, Ontario CA. The radio was built from two broken radios, and the antenna was home made. One of my happiest moments in radio. Has Phil ever thought about getting his license?

Oh, it's been too long between Professor Moriarty videos.

Thank you Prof. Phil. My stepfather bought this book and the required components when I was 10, but we never got a radio to work. But trying to got me into electronics, and I’ve been in the business for 35 years now - with far more success than that old transistor radio. I may try again now, and would love to recreate your cat’s whisker on a penny rectifier! 😃

This is the BEST physics VIDEO ever . I also JUMP on my room when I was kid and my first germanium crystal radio picked up the signal!!! And for the same reason I ended up at CERN 20 years after .. and still listening SW radio . GREAT VIDEO than you!

I'm happy to see you in another video, Dr Moriarty! I usually wait until the evening to watch things, but any new video with you is an instant watch.

Hi, Prof Moriarty. Was in your lectures 2005-2008. Just hearing you talk brings back so much physics notes in my head hahaha. Thanks for your undying enthusiasm.

I had this book as a kid, and like the professor I built my first radio with it. Strung the aerial out of my bedroom window to the washing line pole at the end of the garden. Built the electronics onto tacks hammered into a piece of wood. Used to listen to Capitol Radio on it.

what an honor it is to have a teacher or a profesor like him , just one magnificent human being

As a kid (circa 1960) I used to build crystal radios into filbert nut shells. It was great fun and got me started in my career in electronics.

This video really brought up childhood memories. Loved listening to the AM radio with my crystal receiver. I did use a Germanium diode for greater sensitivity (Ge 0.2V vs Si 0.7V) I remember reading they even old corroded razor blades instead of the penny during the war. Great video as always from you guys.

I had that ladybird book as a boy! I treasured it and seeing the pages again brings back lovely memories. My copy is long gone now - time for a reprint ladybird!

Unexpected beautiful ending.

This is best thing ever I smiled like a little kid again. I built one out of a kit as a youngster and can so relate to the joy this brings.

I remember building a crystal radio as kid sometime in the 90's... I think 93 about 10. I recall opening the kit, and desperately trying to figure out what type of batteries, finding out it doesn't take batteries. With incredulity I thought, how is this going to work without a battery. It did. I picked up many radio stations. It gave me goose bumps to begin to hear the ghostly sound of the radio stations, and become louder as a tuned in. All with a few items: simple electronic diode, piece of toilet paper roll like cardboard with wire wrapped around, small crystal earbud, and various wires and one very long antenna wire, and an optional variable capacitor for that method of tuning as well as a coil wire so you could try the two different tuning methods. So simple and basic that it was the first time I realized it wasn't complicated magic trick, but very basic physics that explain radio reception... and to me the simplicity was the real magic.

Professor Philip you are an inspiration to younger generations of engineers. There is the time when we doubt ourselves but it only takes one video like this to get us back on the track. Cheers!

This is just wonderful to watch! I'm a scientist myself, I know the fascination first hand. It's so engrossing to watch Prof Moriarty!

I love his enthusiasm!

That ending was beautiful.

Love seeing Professor Moriarty's consistent passion for physics. These are always interesting videos but this one made me especially happy with the fun experiment and trip down memory lane. Nice hair! The synchronicity of that song playing was pretty sweet. Cheers!

No lie, this was absolutely beautiful. Very funny how such a fitting song comes on at the end. Seeing Prof. Phil's excitement was priceless.

Brings back memories of my dad teaching me to build my own homemade radio in the early 1970s.

the slideshow during the Green day song was spot on. that song might as well be named the slideshow song. had me dying

This is probably the most excited I've ever seen someone on KZfaq, it's absolutely delightful

Ahh the Green Day song at the end was Perfect!

There couldn't have been a more suitable song. Absolutely amazing!

He is always so excited when he does his videos. No doubt he'd be an awesome instructor.

My favorite professor at Sixty Symbols, others are awesome too though.

To do back of the envelope maths, and make an RC circuit out of simple materials by hand is just awesome. This is at the core of science when a little thing excites you as much as the big stuff.

One of the best videos I've watched for a long time - I've had a life long interest in physics, electronics and as a kid I just adored my "sciency" Ladybird books. happy days, great memories.

Lovely. I just cried during a video about a radio.

Wowzers. Watching this gave me the screaming-hebbie-jeebies; I used the same book and made the same project when I was a kid in junior school 35 years ago! Just ordered the book again from amazon and cannot wait to recreate this stunning piece of wood-electronics.

This was one of the best videos I’ve seen in a long time. Thank you, Brady

Simply a brilliant video. Thank you for making them.

I can somehow imagine how Phil is jumping around as an adult

OMG that book. I still have my original copy from 1975. As a child it was clear I would be an Engineer like my dad but at 10 years old I knew electronics was the future for me. So happy to see you share this with us.

Making me nostalgic for Phil's lectures!

The perfect blend of drama and education. Well done!

This is really fascinating, you guys should do a whole series on radio.

What a great vid. Green Day was perfect

Hey Brady, we are having the time of our lives watching all the great content. Thank you all the professors for spreading knowledge for everyone.

My favorite video you’ve ever made this was awesome

A crystal radio opened the door to science for me as well and a life long love of radio

For the love of science! I kept my crystal receiver that I built in a jam jar, using a toilet roll cardboard tube as coil form. The feeling you get when you hear the first signals is amazing. When green day came on, that montage made me tear up. Just because I share the joy of radio and discovery. It never ages.

Phil has absolute dad energy. Peak Gen X.

I built one if these as a kid but for some reason, never became a Nottingham physicist. Honestly, I’m amazed that there are still amplitude modulation broadcasts.

Well done Brady on taking advantage of the serendipitous song...

Just plain great fantastic stuff. I'll build that with my son this weekend. I remember building a crystal radio in my forest village when I was 10 (that was last century): could hear the town 100 km away: civilization!

I built a crystal radio on a block of wood in our fifth grade class just like it ...it was the beginning of my life long work in radio as a tech and contractor buiding cell tower sites for 30 years I am 68 and retired but it all started with the block of wood

as someone who's always been interested by electronics and more recently radios, when i found out the simplicity of an AM reciever i was very surprised. i also remembered when my friend had decided to try and build a guitar pedal and ended up creating a radio reciever, turns out they were using a silicon diode and im not sure of the rest of the components they had and how they had wired them. before i knew about radios i had no idea what could've been going on, and now that i know what's going on, i wish they had kept it!

Stuff like this needs to be in middle-schools, rather than just plain old boring, essentially meaningless classes, where nearly nothing is being retained. Thank you. Can't wait to try this for myself.

I remember that book so well. Could never afford to build it. But, yes, like Phil, that was where it all started for me too.

Really liked this video. Grass root, basic science. Easy to be forgotten when we all have laptops and smart phones.

Thin Lizzy is one of the most true-of-heart bands to ever exist, period. Cheers to my freethinkers from Portland, OR

God damn. I remember watching this channel a decade ago. I was about 10 years old. Dude aged quite a bit.

Ladybird book of the Hangover is my favourite one. Had a chrystal radio kit as a kid (Well, it was part of a Tandy's electronics kit) thankyou for explaining how it worked!

My God Brady you've done it again. Thank you Phil for allowing science to well up my heart

1:16 .... Phil still has an original copy of THE book! That book started me on the road to where I am today.... watching KZfaq to put off re-editing my CV for another application for a job as a software developer... ... ... if only it had taken me on the same road as it did Phil... I think I might be a bit happier today.

Brady, what a beautiful video! The joy of discovery should always guide our lives. It can make us feel like kids even when we're grownups

These are the kinds of people that we need but don't deserve !

We go thru life enjoying the fruits of genius and inventors, past and present, without realising how things really worked...

how excited he is at 9:31 - look at his leg :)