Using long hair as the 'wind detector' is good because hair will just follow the direction of the apparent wind and not be affected too much by the body shape. Just add the two velocities (whatever angles they are at) and you will get the direction the hair will point in. Moving up and down at the same time could have an effect but it just depends on how far you want to take the accuracy; the vertical velocity would also come into the equation.ForecasterJason said:Bumping to see if anyone can provide insight.
Ok thanks. So, it sounds like then the speed as well with which it would be blown would be accurate from what I was saying.sophiecentaur said:Using long hair as the 'wind detector' is good because hair will just follow the direction of the apparent wind and not be affected too much by the body shape. Just add the two velocities (whatever angles they are at) and you will get the direction the hair will point in. Moving up and down at the same time could have an effect but it just depends on how far you want to take the accuracy; the vertical velocity would also come into the equation.
The reference frame direction needs to be considered here. Of course, the actual velocity of the hair is the same as that of the person. Apparent wind is what will govern the direction of the hair wrt the person and their direction of travel. This is no big deal - just something one needs to take into account. Sailors look at their wind indicator (on top of the mast) constantly but that only gives apparent wind but the flag on the nearby club house can give a different answer and also the flags on other yachts.ForecasterJason said:the speed as well with which it would be blown
Ok. Did you mean "hair" in your second sentence?sophiecentaur said:The reference frame direction needs to be considered here. Of course, the actual velocity of the hot is the same as that of the person. Apparent wind is what will govern the direction of the hair wrt the person and their direction of travel. This is no big deal - just something one needs to take into account. Sailors look at their wind indicator (on top of the mast) constantly but that only gives apparent wind but the flag on the nearby club house can give a different answer and also the flags on other yachts.
Proof reading rules ok.ForecasterJason said:Ok. Did you mean "hair" in your second sentence?