2juli4 via scq.ubc.ca / posted on 20 July 2014

A DIALOGUE WITH SARAH, AGED 3: IN WHICH IT IS SHOWN THAT IF YOUR DAD IS A CHEMISTRY PROFESSOR, ASKING “WHY” CAN BE DANGEROUS

SARAH:
Daddy, were you in the shower?
DAD:
Yes, I was in the shower.
SARAH:
Why?
DAD:
I was dirty. The shower gets me clean.
SARAH:
Why?
DAD:
Why does the shower get me clean?
SARAH:
Yes.
DAD:
Because the water washes the dirt away when I use soap.
SARAH:
Why?
DAD:
Why do I use soap?
SARAH:
Yes.
DAD:
Because the soap grabs the dirt and lets the water wash it off.
SARAH:
Why?
DAD:
Why does the soap grab the dirt?
SARAH:
Yes.
DAD:
Because soap is a surfactant.
SARAH:
Why?
DAD:
Why is soap a surfactant?
SARAH:
Yes.
DAD:
That is an EXCELLENT question. Soap is a surfactant because it forms water-soluble micelles that trap the otherwise insoluble dirt and oil particles.
SARAH:
Why?
DAD:
Why does soap form micelles?
SARAH:
Yes.
DAD:
Soap molecules are long chains with a polar, hydrophilic head and a non-polar, hydrophobic tail. Can you say ‘hydrophilic’?
SARAH:
Aidrofawwic
DAD:
And can you say ‘hydrophobic’?
SARAH:
Aidrofawwic
DAD:
Excellent! The word ‘hydrophobic’ means that it avoids water.
SARAH:
Why?
DAD:
Why does it mean that?
SARAH:
Yes.
DAD:
It’s Greek! ‘Hydro’ means water and ‘phobic’ means ‘fear of’. ‘Phobos’ is fear. So ‘hydrophobic’ means ‘afraid of water’.
SARAH:
Like a monster?
DAD:
You mean, like being afraid of a monster?
SARAH:
Yes.
DAD:
A scary monster, sure. If you were afraid of a monster, a Greek person would say you were gorgophobic.
(pause)
SARAH:
(rolls her eyes) I thought we were talking about soap.
DAD:
We are talking about soap.
(longish pause)
SARAH:
Why?
DAD:
Why do the molecules have a hydrophilic head and a hydrophobic tail?
SARAH:
Yes.
DAD:
Because the C-O bonds in the head are highly polar, and the C-H bonds in the tail are effectively non-polar.
SARAH:
Why?
DAD:
Because while carbon and hydrogen have almost the same electronegativity, oxygen is far more electronegative, thereby polarizing the C-O bonds.
SARAH:
Why?
DAD:
Why is oxygen more electronegative than carbon and hydrogen?
SARAH:
Yes.
DAD:
That’s complicated. There are different answers to that question, depending on whether you’re talking about the Pauling or Mulliken electronegativity scales. The Pauling scale is based on homo- versus heteronuclear bond strength differences, while the Mulliken scale is based on the atomic properties of electron affinity and ionization energy. But it really all comes down to effective nuclear charge. The valence electrons in an oxygen atom have a lower energy than those of a carbon atom, and electrons shared between them are held more tightly to the oxygen, because electrons in an oxygen atom experience a greater nuclear charge and therefore a stronger attraction to the atomic nucleus! Cool, huh?
(pause)
SARAH:
I don’t get it.
DAD:
That’s OK. Neither do most of my students.
(The Dad is Stephen McNeil, "an Assistant Professor of Chemistry at the University of British Columbia Okanagan in Kelowna, British Columbia.")

2juli4 / posted on 20 July 2014

we-are-drowning-slow:

inkskinned:

do you ever put on a really nice but kind of daring outfit and at first you’re like “HELL YEAH” but then you look in the mirror a few times and start being like “hell…  yeah….” and then you turn to the side and adjust the top and frown and be like “aw hell” and finally just change into like jeans and a tee bc one day you will wear that rockin outfit but today is not that day

This is the saddest and accurate thing I have ever read. 

(via theforumcat)


2juli4 via explodinghye / posted on 20 July 2014

explodinghye:

what’s happening to the pacific rim fanbase on twitter

(via 2juli4)


2juli4 via did-you-kno / posted on 20 July 2014 kawaii-obama-san:

runicbasso:

did-you-kno:

Photographer Michel Denis-Huot, who captured these amazing pictures in Kenya , said he was astounded by what he saw:“These three brothers (cheetahs) have been living together since they left their mother at about 18 months old,’ he said.  ‘On the morning we saw them, they seemed not to be hungry, walking quickly but stopping sometimes to play together.  ‘At one point, they met a group of impala who ran away. But one youngster was not quick enough and the brothers caught it easily’.”
Then these scenes followed




and then they just walked away without hurting him.

DAMN, NATURE! YOU CONSIDERATE! 

AWW

kawaii-obama-san:

runicbasso:

did-you-kno:

Photographer Michel Denis-Huot, who captured these amazing pictures in Kenya , said he was astounded by what he saw:

“These three brothers (cheetahs) have been living together since they left their mother at about 18 months old,’ he said. 
‘On the morning we saw them, they seemed not to be hungry, walking quickly but stopping sometimes to play together. 
‘At one point, they met a group of impala who ran away. But one youngster was not quick enough and the brothers caught it easily’.”

Then these scenes followed

image

image

image

image

and then they just walked away without hurting him.

DAMN, NATURE! YOU CONSIDERATE! 

AWW

(via theforumcat)


2juli4 via boysbootsnbooze / posted on 20 July 2014


2juli4 / posted on 20 July 2014

gaaraofsburbia:

james-p-sullivan:

HEY TUMBLR

DID YOU GUYS KNOW JENGA MADE A NEW VERSION OF THEIR GAME, BUT INSTEAD OF STRAIGHT BORING WOODEN ONES, ITS TETRIS PIECES

THATS RIGHT, ITS MOTHER FUCKING TETRIS JENGA

image

THE TWO OF THE MOST STRESSFUL GOD DAMNED GAMES WE PLAYED AS CHILDREN ROLLED INTO ONE

(via a-storm-for-every-spring)


2juli4 / posted on 20 July 2014

yahoo:

staff:

magsby:

petition for tumblr staff to leave

we don’t want to be here anyway

david karp holds us hostage

send help

We paid David good money to keep you here

You’re not going anywhere

(via a-storm-for-every-spring)


2juli4 / posted on 20 July 2014

sassykardashian:

sailingonsuccess:

sassykardashian:

Science side of tumblr how do I become a jellyfish

Jellyfish have no brains. You’re already pretty close.

Okay WOW

(via a-storm-for-every-spring)


2juli4 / posted on 20 July 2014

twinklepowderysnow:

image

yes good now 2 draw the eyelashes

image

perfect

(via lordtableshark)


2juli4 / posted on 20 July 2014

(via ughrin)


2juli4 via sixpenceee / posted on 20 July 2014

sixpenceee:

EVERYDAY THE SAME DREAM is an art game about alienation and refusal of labour. You are a faceless, unnamed man going about his business. The game has alternatives endings. Will you end up going to work and working in a little cubicle like every day, or will you take another route and do something different for once? 

PLAY IT HERE

You may also like: ENTITY

(via lordtableshark)


2juli4 via plasmatics-life / posted on 20 July 2014

(via ughrin)


2juli4 / posted on 20 July 2014 sharkchunks:

iandsharman:

notahoe:

my type of public transportation 

“Why were you late in today?”
“Oh, I got tied up on the subway…”

sharkchunks:

iandsharman:

notahoe:

my type of public transportation 

“Why were you late in today?”

“Oh, I got tied up on the subway…”

(via theforumcat)


2juli4 / posted on 20 July 2014

HISTORIANS

littlexena:

ghostsofvaudeville:

If you aren’t using this website, you’re missing out! It is a collection of primary sources throughout history, online, in plain-text format! With a search engine!

May also be useful for writers

(via rebelgoatalliance)