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Yuptgse Says:

May 26, 2012 - carl sagan on the speed of light

SmallPinkThing1997 Says:

May 25, 2012 - i learnt the doppler effect today, and i literally BEGGED to put this video on, but my teacher didnt let me. DICKHEAD :(

pinkfluffycloud111 Says:

May 25, 2012 - thanks,this was a great video.helped me with my GCSE

dottishful Says:

May 25, 2012 - I'm trying to revise doppler effect + remembered this video, thanks charlie!

candycozy45 Says:

May 25, 2012 - we watched this in my science class!! they all love you thanks to me!!! :)

ClarkyMF42 Says:

May 24, 2012 - We watched this in my science class, and the first thing people did was turn around to me and yell, HE LOOKS LIKE YOU!!! Then I realized I LOOK LIKE CHARLIE!!!!

ThePotterheadwhovian Says:

May 24, 2012 - Thank you so much Charlie, I think you just saved me from failing my physics exam! You explain this so much better than my teachers! :) -3

Poppywind Says:

May 24, 2012 - Hey, looks like I won't fail my science final. /Charlie can better explain the Doppler effect through silly videos than a multitude of people can through any other method

TheNerdyAndWeird Says:

May 24, 2012 - Wait, so will you make our time go faster? Or will we just go at regular speed time? I mean like if you ran around was it.. London or Earth? don't know, but u ran around something...

Goldminor1127 Says:

May 24, 2012 - 2:31 bell actually smilling

TheInvisibleDonuts Says:

May 23, 2012 - I was watching this while I had a cold so every time I laughed I coughed. As you can imagine, I coughed a lot.

maxmaximum10 Says:

May 23, 2012 - But I don't have an I-phone... I wanna see a red Charlie!!!

wottafella Says:

May 23, 2012 - you have taught me the doppler affect in just 1 min, where as my teachers tried to teach me in just 2 weeks.

EktaaThakurr Says:

May 23, 2012 - YAY! I'm revising! =) 

bkwms1 Says:

May 22, 2012 - I'm not sure if you read the comments to your past videos or not (so of course I plan on being obnoxious and also posting this message on your profile a billion times) (just kidding, that's rude) but have you heard of the Doppler effect rumor about the Doctor Who during seasons 5 and 6? You should look it up although I'm not sure if it's true or not...

Crystel150 Says:

May 22, 2012 - Study for my final! :D

Crystel150 Says:

May 22, 2012 - This is actually helping me w

cassluvsu1112 Says:

May 22, 2012 - Thanks for doing my homework for me! xD

jotster123 Says:

May 22, 2012 - i think i am not going to FAIL now :D thankx to you... charlie that really helped :D

jotster123 Says:

May 22, 2012 - heyyy can u make more fun scisn ce video s like for all f the edexcel things for my exams ? it will be good and by the way this video helped a lot thanks :)

irisdoggy001 Says:

May 21, 2012 - More Fun Science! My science teacher wants you to explain Black Holes. So yeah, wooh.

superlalabbz Says:

May 21, 2012 - confused about whether you say 'fast' or 'farst'

Iluvpie6 Says:

May 20, 2012 - I love your videos! You seem smarter than most people I've met in real life.

AwkwardStormtrooper Says:

May 20, 2012 - YEAY I"M REVISING AND HAVING FUN!!!!!

LizIsForever Says:

May 19, 2012 - HAHAHAHAHAHAHAHAHA! Oh my god your so going to fail. I learnt the doppler effect in the seventh grade, easiest thing ever.