By that logic, there's also no such thing as a meter either. It's defined as a distance light travels in a time interval proportional to the inverse of a frequency related to the caesium-133 atom. Definitions don't mean there's "no such thing" as something, it's just a matter of if the units are useful in a given context. And meters are more useful in most everyday contexts.
Persian shield care with wilting leaves
I have what I think is a persian shield, and the leave are wilting on it. I worry about it getting worse and would like some feedback on what to do to care for it and prevent it from getting worse.
I am not sure if I am overwatering it or underwatering it. I don't keep a strict schedule, but I roughly water it twice a week. Putting my finger in the soil, it is a bit dry at the top but a little moist inside now, not crazy moist though. I also brought it indoors a few weeks ago now for the winter, so maybe it isn't getting enough sunlight? Any suggestions on helping my baby would be greatly appreciated!
Probably relative to the CMB (the frame of reference where there is no redshift or blueshift bias in any direction).