The color of the light is mathematically determined by the energy level difference.
"We know at this level the difference is error and until we cut them out in our game, that's going to be difficult to get results, " Rees said.
Was he able to make out vague shapes, or at least perceive, on some level, the difference between night and day?
At the start of Sunday, West Ham and Reading had been tied on 70 points and were level on goal difference.
In injury time, Lampard did add the fifth, heading in after Drogba had nodded down Cole's high left-wing cross to give Chelsea the added bonus of drawing level on goal difference with Manchester United.
There are also hand-drawn animation sequences in-between levels, which are impressive, but during a level the only difference between playing the game and a cutscene is your lack of control over the camera and the letterbox format.
So why the difference in level of importance in terms of the public event?
And certainly there is some good international evidence that action at a local level can make a difference.
The FSA was using the 1% threshold "as a pragmatic level to determine the difference between gross and trace contamination", she said.
"Jens is someone at the very highest level who knows the difference in standard between mediocrity and the absolute top in the world, " says Maes.
Wenger's side are level on points with Chelsea on 48 points, and are level with a goal difference of 34, but the Gunners go top having scored more goals than their London rivals.
Williams outlined a lack a UEFA A Licensed coaches at grassroots level as a key difference between England and continental Europe, as well as suggesting over coaching can cause some youngsters to burn out.
Because it makes all the difference at every level who it is we decide we are leading.
FORBES: Leading in an Age of Decreased Face-to-face Communication
Again, there was a marked difference in the level of detail and richness in description from the bilingual pupils.
"Alessandro is an important player with great international experience and that's what makes a difference at this level, " said Berbizier.
The torpedo-shaped instrument gathers data about the difference between the level of the seawater beneath the ice and the surface of the ice itself.
"Little things make a big difference at this level, " Tejada said.
"I want to really stress the examples of good practice which we're publishing in our report today, where agencies are working together at a local level to really make a difference on safeguarding children, " he said.
Mr Hagel promised that North Atlantic Treaty Organisation (Nato) allies in Europe would see no difference to their level of protection as a result, with the first three phases of the EPAA providing coverage of all of their territory as planned by 2018.
He said they make a difference at the personal level with the people they help.
As a partner of Wegene, I have the opportunity to make a difference at a personal level.
We are relaunching the company that originally incubated Twitter with a high level of commitment to making a difference and developing products that matter.
FORBES: Biz Stone Steps Down From Twitter, Re-Starts Obvious Corp.
Hundreds of Tea Party groups have made a difference at the local level, rolling up their sleeves and impacting races from school board to Congress.
The difference comes at the bottom level which is real when using people, but is unlimited when using dollars.
Whether or not it was change of formation that made the difference, the scores were level a minute into the second half when Edu misdirected his attempt to head clear a Tino Costa free-kick into the corner of the net from all of 15 yards.
However, it is the incredible difference in statistics of impacted executive level women versus executive level men that has me concerned.
FORBES: Senior Female Leaders Impacted More Than Male Counterparts in Difficult Economy
That may not sound like a large enough voting block to decide an election but, on the state level, young voters can make a big difference.
But ultimately, the competitive difference will be made by the level of organizational influence exerted by the data scientist to make the information from the data actionable.
"The difference in the game was the level of pressure they put on us in the second half and certainly the shots they made, " Butler coach Brad Stevens said.
Spurs stay in fifth with 62 points, level with Chelsea but with an inferior goal difference, while Wigan remain in the bottom three with 32 points, two points adrift of safety.
CNN: Spurs drop points at Wigan to dent Champions League bid
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