doctor doctor i feel like watching operation ouch you can watch him now on the free BBC iPlayer app.
Cupboard lights off what are you doing in there i'm spending some time in the dark Chris ready
to fire up my superpower to become night vision man well can you come out please not yet Chris
i need to be here for about 20 to 30 minutes as i'm standing here in the dark the rod cells in
my retina are gradually adjusting and increasing their sensitivity to extremely low levels of light
and then i will be ready to defeat my arch nemesis day vision man who's day vision man ah
that's me isn't it obviously my transformation is complete i'm ready lab lights off
day vision man prepare to meet your doom i can't see a things on exactly
time for the first challenge lava floor
the floor of the lab is covered in hot lava and the only way to cross it is by these stepping
stones my rod cells have gone through a process called dark adaptation which works by the cells
getting more sensitive to light the longer they're in the dark so i can see where to step
oh oh dear because davis man's eyes haven't adjusted to the dark he's walking all over the
lava i can't see the stepping stones are tall here's an operation you must perform head to
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operation ouch challenge two find a brain in one bowl there is a brain in the other bowls there is
disgusting stuff you'd want to avoid to complete the challenge you must retrieve the brain on your
marks get set go well i can just about make out the bowls because my rods have started adjusting
to the dark but i can't read the labels well i'm just gonna have to feel in the bowls here goes
this is absolutely disgusting no brain there that's just slimy that'll be the snot then
time to look in the second bowl let's have a dip
that sounds like the mud bowl yuck there's no brain in here
weren't you having a rummage because my night vision is working perfectly and so i can see the
brain i can't see the green colour of the snot or the brown of the mud because my cone cells
don't work in the dark but i can read the labels because my super sensitive rods have adjusted
to the dark and allow me to see the size shape and brightness of my surroundings there you go
not a very difficult challenge at all really time for challenge three pin the brain in
front of you is a picture of a brain all you need to do is pin it onto billy's head
and this is where i night vision man we'll try out finished what i finished the game i've pinned
the brain on billy bones i've done it but how did you beat me at my own challenge because
on my rods have now adapted to the low level of light you see i too am night vision man two
so we've shown you that white light is made up of all the colours of the rainbow which can be
detected by cone cells in your eyes and that thanks to rod cells your eyes can go
through a process called dark adaptation which allows you to see in the dark helping you to do
the same things you do in the daytime what are you doing Xand? well i can't be night vision man if
you're also night vision man so instead i've decided to become the rainbow raider i'm gonna
create a mega blast of rainbows using my radical rainbow ray here i go rainbows go
i think i've got a fever iPlayer app fever i've just downloaded it
for free to watch brand new operation out whenever i want and you should do it too