amazing!! thanks for sharing this

eyy, guess what, i still have an iphone 4 lying around...

Really good fun. I used to throw these 60 years ago. I preferred live wood such as Hazel or Holly. Works well between 9 and 14 inches. split the narrow end about 3 inches. Cut two flights about 2 and a quarter inches long from a doubled over Cornflake packet - heart shape works quite well. Insert into slot. Bind above and below the flights. Bend out flights. Cut a slot in the arrow about 2 inches below flights sharpen the point and using fairly thick string continue as in the video. No weight necessary.

તમને આવો વિચાર ક્યાથિ મળિયો

Awesome!

I'm pretty sure, that the Fresnel lens gotta be useful in that stand.

Well done! Excellent!

I thought it was dangerous to point a laser anywhere near your eyes?

neat video but please can you work on your audio can barely hear you and my phone's got a good speaker. but you got a new subscriber

Which meterials do you use

Came here from Grade 7 Science class lol

Tank you , truly from muito hearth

Thank you for your video posting! I will try it.

Can you please share the name of materials which are required.......... Please.....

Thanks for sharing 👍

One order

my mates dad took a pheasant straight through the eye with one. He aimed for it too. We had many long summer days and evenings throwing them in the field behind his home.

How you measure the magnification of the lens?

Now that's possible with the iphone 13 pro max, 6 years later

good job!..

How can its magnification be increased further?

Will you make one for me. I have $$$$!

Legends are watching in 2021🤣🤣

What is it doing as an enlarger? Plexiglas?

Great job. Can this set magnify bacteria?

Thanks you

Thank you 🙏🏼

👍👍👍

This is a very nice video, the only thing is that with that lens you don't even reach macro magnification ratio 1:1 (subject image size to real life size) ... I honestly don't know what kind of magnification you were measuring - digital zoom maybe ?

Downhill skiis are too wide, heavy and have steel edges. Not worthy of a bow !

2021, iPhone 11 😂

2020 Thank you

Looks like lots of fun and with practice, probably can hunt small game with it.

did this for school

It's an error to wrap once around the arrow!!! you're maybe securing the nutch, but you loosing "spring effect", !! the more straight is the paracord the strongest you will throw your "dart-arrow" whatever you call it...The arrow will never "turn" in the air anyway, there is not enough energy for, (it's not a barrel!), and your "wings" will drive it right too....If you want it to turn, you should mount the wings differently (on the slant/bias), and they have to be tiny (not wide)...For the rest, your advices are excellents....(sorryfor my broken english, i'm a old french rocker!!!lol)

Microscope smartphone kzbin.info/www/bejne/oH68nJRpjLqasMU

So what the hell CAN'T you do with a smartphone these days.? In 25 years from now there will be a video on how to use your smartphone to give yourself a full body health scan....🤔

Such a great idea. Weird how some people need to buy a smartphone first (as mentioned in the comments). I guess it's the age of be video. Now virtually everyone has a smartphone these days.

Most helpful yet easy microscope I found in youtube till now. Thank you.

If you can't "invent" this, you are not made for science anyway.

Found this in 2020, and I love it! I'll definitely build several of these. For myself, for my class and for my science teachers colleagues.

Ok. Now how to extend the focal length. I want same magnification but holding further away so i can use tools inbetween such as for electronics repair. I'm getting about 15cm using jewlers x10 loupe at back of phone so far. How to make it about 25cm

Having problems with circuits? Try circuit solver Check out androidcircuitsolver on google

Volume of ur video sucks

Turn your slippers to broomstick for beating him

Sorry I have a question, is it okay if I replace the lens from laser with external lens for smart phone?