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Radiance

In radiometry, radiance is the radiant flux emitted, reflected, transmitted or received by a given surface, per unit solid angle per unit projected area. Spectral radiance is the radiance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. These are directional quantities. The SI unit of radiance is the watt per steradian per square metre (W·sr−1·m−2), while that of spectral radiance in frequency is the watt per steradian per square metre per hertz (W·sr−1·m−2·Hz−1) and that of spectral radiance in wavelength is the watt per steradian per square metre per metre (W·sr−1·m−3)—commonly the watt per steradian per square metre per nanometre (W·sr−1·m−2·nm−1). The microflick is also … more »

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 Watch: New Singing Lesson Videos Can Make Anyone A Great Singer

Tell me you love me, I won't say it again
Say that you need me, or swear we're just friends
The music died before I met you, let's play it again
I can be a million different people on a thousand different days
But I wouldn't be that one if you had it your way
Facebook told you that I'm okay
But I die every day and bottle it up all the same
Over the weekend it's sinking in, are we drinking to pretend this isn't a trend?
Our lives embodied by hashtags again
Tell me you love me, I won't say it again
Say that you need me, or swear we're just friends
The music died before I met you, let's play it again
Let's play it again
Let's play it again
You can be a million different people on every single page
But you wouldn't be that one if you just stayed the same
Captions tell me that you're okay
But you lie every day and cover it up all the same
Over the weekend it's sinking in, are we drinking to pretend this isn't a trend?
Relationships replaced by fake friends
Tell me you love me, I won't say it again
Say that you need me, or swear we're just friends
The music died before I met you, let's play it again
Let's play it again
Let's play it again
Take a thousand different pictures
To prove to the world you're not just another lonely girl
But under it all we like to pretend this isn't a trend
We're all a ten
You don't need constant validation
Tell me you love me, I won't say it again
Say that you need me, or swear we're just friends
The music died before I met you, let's play it again
Let's play it again
Let's play it again
Tell me you love me, I won't say it again
I won't say it again
I won't say it again
(I won't even slide into your DM's)

 Watch: New Singing Lesson Videos Can Make Anyone A Great Singer