White sand to a radiant,

[Lesser spren]

White sand can passively absorb investiture, if a ribbon of white sand were shot at a radiant would the sand absorb the radiant's stormlight  or would the radiant be able to absorb the sand's investiture once it hit their blood?

[Quantus he/him]

White Sand gets charged in the presence of Kinetic Investiture, per WOB, so it has a little more to do with being in the presence of active Surges (or Stormlight effects like Healing) more than just being near a Radiant.  I dont think your average radiant would be able to natively breath in Investiture from the sand without taking additional steps (though a Larkin sure could). 

But even if they could, all evidence suggest it would be a tiny amount by Radiant standards, it's getting charges on very low-level, ambient inefficiency leakage.  White sand gets charged by the Investiture equivalent of radiation, whereas surges are on the high end of the Investiture spectrum. So by comparison, you can do a lot with the heat given off of big motors and machines, but you cant generally run those same motors from the amount of power they shed.  

 

https://wob.coppermind.net/events/324/#e9288

https://wob.coppermind.net/events/475/#e15002

Edited March 31, 2023 by Quantus

[Argenti he/him]

I'm sure the sand would just not turn black (from the leaking stormlight). The radiant wouldn't notice it since its just so little investiture being thrown around.