Blow Your Mind, With an Alarm Clock!




About: I'm tall.

This is a trick for anyone who wants to make funny noises and see funny things. Other than that, this instructable is kinda hard to describe. So read on, viewer!

Step 1: The Right Ticker.

First, you're going to need a clock, and not just any clock. The ideal is an digital AC POWERED clock. AC powered clocks plug into the wall. I find that clocks with big, red digits work best.

This trick will not work with DC POWERED clocks. (i.e. atomic clocks, watches, potato clocks, etc.)
DC powered clocks use batteries only.

Step 2: The Face!

The most important step, because it is really the only step.

1) RELAX your face, slightly close your jaw, and blow. It should sound like a gust of wind.

2) While blowing, FORCE your lips together. The result will sound like a cross between a machine gun and a fart.

If you're struggling, search "How to Blow Into a Trumpet Mouthpiece" . It should help.

If you still have problems, wash your face with warm water. this will help relax.

If you STILL can't do this, then buy one of these things.

If you don't want one, then read the comments below, the community seems to have really good alternate ideas.

Step 3: Gaze at Clock

Do step 2, and look at your clock. It should look like the picture below. The more air pressure you exert, the more the numbers dance around.

I hope this works for you, and feel free to ask any questions!

...and don't forget to rate!

..and breathe!!



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    13 Discussions

    Kim Ikazi

    3 years ago

    gonna try this with my vibrating tongue bar piercing :p lol

    Jack A Lopez

    9 years ago on Introduction

    I have noticed something similar.  I have seen the digits on this style of alarm clock do funny things if I stare at the clock while eating ice cubes.

    Rumor has it, the effect has something to do with the relatively slow speed at which this type of display re-draws its digits.

    1 reply

    most LEDs hooked up to AC current don't have filter capacitors to smooth out the polar flip flop, due to the fact that most people don't even notice the change. AC runs at 60Hz, which can be seen by any motion while looking at the light. instead of being "full on", the LED is turning off, on, off, on 60 times per second, just at the edge of our perception. this works while eating ice and using an electric toothbrush, because they both send vibrations to our eyes, allowing us to see the breaks between the AC flops. an easier way to do this is to turn your head rapidly (or spin in a chair) and you can perceive the effect. also, in said example, you could just pick the clock up (leaving it plugged in, of course,) and move it about rapidly (within the length of the cord, obviously).


    7 years ago on Introduction

    this is a really awesome trick, the effect is amplified hugely if you are brushing your teeth with an electric toothbrush!


    8 years ago on Step 3

    Yes, it works with many number panels in airports, shops e t.c. Nice and funny )


    8 years ago on Introduction

    I did this by accident in the middle of the night- really freaked me out


    9 years ago on Introduction

    Lol i did this at school by accident in 5th grade.


    9 years ago on Introduction

    Brush your teeth with an electric toothbrush while looking at a crt screen. Same idea.

    with a jew's harp the numbers move up and down togeather and they seem to match the freequency of the harp depending on what note your making