[scientizscht (OP)]

Hello

Is Stokes Law a vector equation orr a scalar?

Wikipedia seems to present it as scalar.

Thanks!

[Bored chemist]

seems to present it as scalar.

In what way?

[alancalverd]

Which Stokes law?

Stokes' law of fluorescence is scalar - it's the ratio or difference between two wavelengths or frequencies. Stokes' law of viscous drag is essentially vectorial as it concerns forces and velocities.   

[paul cotter]

Maybe the op is thinking of Stoke's theorem, a theorem of vector analysis that equates a closed line integral to a surface integral of a curl function under suitable conditions. It is an extension of Green's theorem. I hope what I wrote is correct, my vector analysis is very rusty!

[JesWade21]

The opposites of positive and negative are the same thing. Therefore, negative scalars are possible. Although they might be a little pointless without some additional suppositions.

A 10 m/s speed is scalar. A scalar speed of -10 m/s would have the same meaning. The negative scalar velocity would make sense, though, if you add the additional assumption that the moving object has a front and a back (like a car). You reverse your direction, but you continue to remain silent.
Additionally, zero is typically arbitrary and can be set to any value. Taking temperature, voltage, and energy as examples. All it takes to go from positive to negative is to change the zero level.

[thugtomas]

The Stoke's theorem states that “the surface integral of the curl of a function over a surface bounded by a closed surface is equal to the line

[thugtomas]

The Stoke's theorem states that “the surface integral of the curl of a function over a surface bounded by a closed surface is equal to the line