Irrelevant

Photo

Sun, 19 May 2013 03:24:32 +1000

kateoplis: NACA

Sun, 19 May 2013 03:24:28 +1000

kateoplis:

NACA

mucholderthen: Illustrationthe visible spectrum as part of the...

Sat, 18 May 2013 23:58:54 +1000

mucholderthen:

Illustration
the visible spectrum as part of the electromagnetic spectrum
(Credit: Abrisa Glass & Coatings, 2005)

X-rays, light, and radio waves are examples of electromagnetic waves.

Light is what we call the part of the electromagnetic spectrum that we can detect with our eyes. The cone photoreceptors in our eyes have evolved so that they are most sensitive at different regions of the visible spectrum. This forms the basis for our sensation of color

At the blue end of the visible spectrum, the wavelength of light is shorter — about 400 nanometers.

A nanometer is 1 billionth of a meter, or 1 × 10−9 meter. The abbreviation for nanometer is ‘nm’.

At the red end of the spectrum, the wavelength of light is longer — about 700 nm.

Cone photoreceptors have evolved into three different types. Each one is most sensitive to a different region of the visible spectrum. One type responds best to shorter wavelengths; another responds best to wavelengths towards the middle of the spectrum; and the third type responds best to longer wavelengths.

The different cone photoreceptors are not sharply tuned to a particular color, however. So a short-wavelength cone photoreceptor can still respond to longer-wavelength light that falls on it. It is more likely to respond to shorter wavelength light, but it is still possible for it to respond to mid- and long-wavelength light.

The signals from the three different types of cones are combined in the retina and in the brain, eventually giving rise to the sensation of color.

[ via Mixing Light ]

Photo

Sat, 18 May 2013 22:33:03 +1000

jtotheizzoe: We never sit here under the weight of all this...

Sat, 18 May 2013 22:33:01 +1000

jtotheizzoe:

We never sit here under the weight of all this air, the 5 x 10^18 kg of atmosphere that sits above everyone on Earth, and say “Gosh, that sure is heavy!”

You don’t realize just how powerful that 1 bar (~100 kPa) of pressure is until a train car is filled with steam, allowed to cool, and then implodes ohmygod did that just happen?

laboratoryequipment: Physics Principles Can Be Observed in...

Sat, 18 May 2013 22:33:00 +1000

laboratoryequipment:

Physics Principles Can Be Observed in Bowls of Cereal

Andong He saw a phenomenon at work in his breakfast bowl that he couldn’t explain. It prompted this question: how does cereal shape influence the way cereals floating in the milk join? The Yale postdoctoral student offers an answer, along with collaborators Khoi Nguyen and Shreyas Mandre of Brown Univ., in a paper published in Europhysics Letters.

“Two floating objects, when they attract each other, will try to maximize the area of contact,” says He, of Yale’s Department of Geology & Geophysics. “Think about two ellipses — instead of tip to tip, they will try to align so that they are side to side.”

Read more: http://www.laboratoryequipment.com/news/2013/05/physics-principles-can-be-observed-bowls-cereal

starwarssithlord: Star Wars art by Brian Rood. Check him out at...

Sat, 18 May 2013 14:26:03 +1000

starwarssithlord:

Star Wars art by Brian Rood. Check him out at Official Brian Rood Art @ facebook!

Photo

Sat, 18 May 2013 14:25:59 +1000

nybg: uglytomatoes: jojoworksout: isnaberoman: -My Nerdy...

Sat, 18 May 2013 14:23:30 +1000

nybg:

uglytomatoes:

jojoworksout:

isnaberoman:

-My Nerdy Nerdiness expresses itself :)

As a chemist, this makes me smile!

Huh, kinda interesting in a “I have no idea what this means” sort of way.

I will admit to having looked a few of these up to be sure I was interpreting them correctly. What you see are the chemical formulas of various substances used to mimic plant-based aromas and flavors. Pretty, and pretty neat. ~AR

astronomy-to-zoology: Hummingbird Bobtail Squid (Euprymna...

Sat, 18 May 2013 14:23:26 +1000

astronomy-to-zoology:

Hummingbird Bobtail Squid (Euprymna berryi)

Also known as Berry’s bobtail squid, the hummingbird bobtail squid is a species of bobtail squid found throughout the warm waters of eastern Asia. Like most bobtail squid, berry’s bobtail squid has a light organ in its gill cavity which emits light to help it hide its silhouette from predators. During the day the hummingbird bobtail squid can be found buried in the sediment, at night they will emerge to feed on small invertebrates like shrimp and other crustaceans.

Phylogeny

Animalia-Mollusca-Cephalopoda-Sepiolida-Sepiolidae-Sepiolinae-Euprymna-berryi

Image Source(s)

odditiesoflife: Rare Nacreous Clouds Also called polar...

Sat, 18 May 2013 14:16:24 +1000

odditiesoflife:

Rare Nacreous Clouds

Also called polar stratospheric clouds or mother of pearl clouds, nacreous clouds are mostly visible within two hours after sunset or before dawn. They blaze unbelievably bright with vivid, iridescent colors. These clouds are rare and occur in the polar stratosphere at altitudes of 15,000–25,000 meters. They are so bright because at those heights, they are still sunlit.

Although incredibly beautiful, they have a negative impact on our atmosphere. They create ozone holes by supporting chemical reactions that produce active chlorine which catalyzes ozone destruction.

Photo

Sat, 18 May 2013 14:16:03 +1000

the-science-llama: The Feynman Series (part 4)— The Key to...

Thu, 16 May 2013 20:15:36 +1000

the-science-llama:

The Feynman Series (part 4)
— The Key to Science (featuring Joan Feynman)

comaniddy: Are you down with Real Science?[Watch the Video]

Wed, 15 May 2013 16:14:08 +1000

comaniddy:

Are you down with Real Science?

[Watch the Video]

hiddleswiggles: every-loki-lies: rxlconvoy: GOOD GUY ROBERT...

Wed, 15 May 2013 16:14:06 +1000

hiddleswiggles:

every-loki-lies:

rxlconvoy:

GOOD GUY ROBERT DOWNEY JR.

Marvel is being a piece of shit and idiot for thinking of recasting. The actors are already becoming characters.

You can’t just stick some dude in the place of Chris Hemsworth and call him Thor.

the-science-llama: LASERS!! BECAUSE SCIENCE!!

Wed, 15 May 2013 16:14:04 +1000

the-science-llama:

LASERS!! BECAUSE SCIENCE!!

ikenbot: This is a GIF set of Astronauts falling on the Moon

Wed, 15 May 2013 16:14:02 +1000

ikenbot:

This is a GIF set of Astronauts falling on the Moon

38 39 40 41 42 49 53 54 56 57 58 59 61 93 97 113 134 148 154

Wed, 15 May 2013 14:44:46 +1000

38: The reason I joined Tumblr
I honestly don’t know..
39: Do I and my last ex hate each other?
I wouldn’t say that at all.
In fact we talk a fair bit.
40: Do I ever get “good morning” or “good night ” texts?
Sometimes :D
41: Have I ever kissed the last person you texted?
I think I’ve kissed sister once on the forehead.
42: When did I last hold hands?
I held my own hands all day, because THEY WERE FUCKING FREEZING…
49: Am I excited for anything?
Tonight :D
53: What if the last person I kissed was kissing someone else right in front of me?
Well.. I wouldn’t be too happy. Because like, that would make zero sense and be super weird and like.. no.
54: Is there anyone I trust even though I should not?
No. Not that I can think of.

This is just like, a super dense block of questions, isn’t it?

56: If I could meet anyone on this earth, who would it be?
Some random guy? I dunno D:!
57: What do I think about most?
Um, good question. Stressful things, like exams, and homework I should be doing…
58: What’s my strangest talent?
I don’t think I have one? Um, I can do backwards somersaults?
59: Do I have any strange phobias?
I hate needles.
61: What was the last lie I told?
I hate needles. Because actually, I REALLY HATE NEEDLES

Oh good, a massive gap in the questions

93: Have I ever kissed somebody in the rain?
Aye
97: Had sex in public?
Neigh
113: Cut myself?
Aye, but not in a self harm way
134: What do I want for birthday?
Of course you ask me this and it was just my birthday.
Um.. smiles :D
148: What I’m really bad at
Picking out presents and things I want :D
154: Something I fantasise about
ooooh.. do I torment you mr grey face with a sexual fantasy.. or do I just talk about being an alien from outer space, and not knowing it…

3 4 7 9 11 14 17 20 31 32 33 34

Wed, 15 May 2013 05:50:14 +1000

3: 3 Fears
Needles, getting lost in a blizzard and being abandoned
4: 3 things I love
Cookies and cream ice cream, my friends, science}
7: My best friend
I don’t like to pick best friends, they are all great people
9: My best first date
See, I’ve never really had a first date to start a relationship.. It’s always kinda just happened some other way.. :S Hipster sean?
11: What do I miss
My nice warm bed and being all nice and warm in it.
14: Do I have a crush
No
17: Favourite food
I like a lot, parma’s, lasagna, cake…
20: First thing I notice in new person
Their eyes, face and smile
31: How I feel right now
COLD.. But awake, which is good
32: Someone I love
Do fictional characters count? If so, then john crichton
33: My current relationship status
None really, I mean there’s a girl I like and all, but I don’t think that in the next month it’s going to change to “in a relationship”. But oh well.
34: My relationship with my parents
Um, complicated. At the moment it’s pretty good :)

This could be fun (or extremely depressing)

Tue, 14 May 2013 20:30:23 +1000

1: Name
2: Age
3: 3 Fears
4: 3 things I love
5: 4 turns on
6: 4 turns off
7: My best friend
8: Sexual orientation
9: My best first date
10: How tall am I
11: What do I miss
12: What time were I born
13: Favourite color
14: Do I have a crush
15: Favourite quote
16: Favourite place
17: Favourite food
18: Do I use sarcasm
19: What am I listening to right now
20: First thing I notice in new person
21: Shoe size
22: Eye color
23: Hair color
24: Favourite style of clothing
25: Ever done a prank call?
27: Meaning behind my URL
28: Favourite movie
29: Favourite song
30: Favourite band
31: How I feel right now
32: Someone I love
33: My current relationship status
34: My relationship with my parents
35: Favourite holiday
36: Tattoos and piercing i have
37: Tattoos and piercing i want
38: The reason I joined Tumblr
39: Do I and my last ex hate each other?
40: Do I ever get “good morning” or “good night ” texts?
41: Have I ever kissed the last person you texted?
42: When did I last hold hands?
43: How long does it take me to get ready in the morning?
44: Have You shaved your legs in the past three days?
45: Where am I right now?
46: If I were drunk & can’t stand, who’s taking care of me?
47: Do I like my music loud or at a reasonable level?
48: Do I live with my Mom and Dad?
49: Am I excited for anything?
50: Do I have someone of the opposite sex I can tell everything to?
51: How often do I wear a fake smile?
52: When was the last time I hugged someone?
53: What if the last person I kissed was kissing someone else right in front of me?
54: Is there anyone I trust even though I should not?
55: What is something I disliked about today?
56: If I could meet anyone on this earth, who would it be?
57: What do I think about most?
58: What’s my strangest talent?
59: Do I have any strange phobias?
60: Do I prefer to be behind the camera or in front of it?
61: What was the last lie I told?
62: Do I perfer talking on the phone or video chatting online?
63: Do I believe in ghosts? How about aliens?
64: Do I believe in magic?
65: Do I believe in luck?
66: What's the weather like right now?
67: What was the last book I've read?
68: Do I like the smell of gasoline?
69: Do I have any nicknames?
70: What was the worst injury I've ever had?
71: Do I spend money or save it?
72: Can I touch my nose with a tounge?
73: Is there anything pink in 10 feets from me?
74: Favourite animal?
75: What was I doing last night at 12 AM?
76: What do I think is Satan’s last name is?
77: What’s a song that always makes me happy when I hear it?
78: How can you win my heart?
79: What would I want to be written on my tombstone?
80: What is my favorite word?
81: My top 5 blogs on tumblr
82: If the whole world were listening to me right now, what would I say?
83: Do I have any relatives in jail?
84: I accidentally eat some radioactive vegetables. They were good, and what’s even cooler is that they endow me with the super-power of my choice! What is that power?
85: What would be a question I’d be afraid to tell the truth on?
86: What is my current desktop picture?
87: Had sex?
88: Bought condoms?
89: Gotten pregnant?
90: Failed a class?
91: Kissed a boy?
92: Kissed a girl?
93: Have I ever kissed somebody in the rain?
94: Had job?
95: Left the house without my wallet?
96: Bullied someone on the internet?
97: Had sex in public?
98: Played on a sports team?
99: Smoked weed?
100: Did drugs?
101: Smoked cigarettes?
102: Drank alcohol?
103: Am I a vegetarian/vegan?
104: Been overweight?
105: Been underweight?
106: Been to a wedding?
107: Been on the computer for 5 hours straight?
108: Watched TV for 5 hours straight?
109: Been outside my home country?
110: Gotten my heart broken?
111: Been to a professional sports game?
112: Broken a bone?
113: Cut myself?
114: Been to prom?
115: Been in airplane?
116: Fly by helicopter?
117: What concerts have I been to?
118: Had a crush on someone of the same sex?
119: Learned another language?
120: Wore make up?
121: Lost my virginity before I was 18?
122: Had oral sex?
123: Dyed my hair?
124: Voted in a presidential election?
125: Rode in an ambulance?
126: Had a surgery?
127: Met someone famous?
128: Stalked someone on a social network?
129: Peed outside?
130: Been fishing?
131: Helped with charity?
132: Been rejected by a crush?
133: Broken a mirror?
134: What do I want for birthday?
135: How many kids do I want and what will be their names?
136: Was I named after anyone?
137: Do I like my handwriting?
138: What was my favourite toy as a child?
139: Favourite Tv Show?
140: Where do I want to live when older?
141: Play any musical instrument?
142: One of my scars, how did I get it?
143: Favourite pizza toping?
144: Am I afraid of the dark?
145: Am I afraid of heights?
146: Have I ever got caught sneaking out or doing anything bad?
147: Have I ever tried my hardest and then gotten disappointed in the end?
148: What I'm really bad at
149: What my greatest achievments are
150: The meanest thing somebody has ever said to me
151: What I'd do if I won in a lottery
152: What do I like about myself
153: My closest Tumblr friend
154: Something I fantasise about
155: Any question you'd like?