I'm a female college student and I bike both to school and work, and I have a really hard time managing any kind of personal style without sacrificing comfort or safety. For one, I refuse to bike without a helmet making most hair styles near impossible to do before heading out. Second, I sweat a lot! I'm biking in San Francisco and no matter how fit I am, with those hills I work up a serious sweat. I have so many cute tops and outfits that I just never get to wear because there is no way I would feel good sweating in them so I often end up opting for jeans and a boring shirt.Thanks in advance for your advice, I certainly need it!!
I'm assuming that you have a 15 rim to install the replacement P215/70R15. You are only reducing the radius of your tire by .01 inches. You're speed may be a little off, but having the core weight more on the center of the tire would give you a better performance. The R16 tire is for the bling factor anyway.
Well, this is a perfectly reasonable scenario, and (while it would be tricky to do) it is easier than they make it lookthere is no need at all to move the mirror at the speed of light, provided that the distance between the mirrors is large. To take an extreme example, if one of the mirrors were as far away as the moon, you could flip on the flashlight and then more or less leisurely move the near mirror into place (you'd have nearly 2 seconds befor the reflected beam came back). FTL not required! In theory, you could have infinitely reflecting beams this way, provided that the beams are perfectly perpendicular to the mirrors (otherwise they'd soon zigzag toward the edges and fall outside the mirrors); and provided the mirrors are 100% reflective. You can solve the first problem by adding additional mirrors on the sides, essentially forming a reflecting box. But you can't really solve the second problemthere are no 100% reflective materials. Let's say your mirrors are 99.999% reflective (so your beams lose 0.001% of their brightness each time they bounce). This is way shinier than your average mirror. And let's say your mirrors are 1 mile apart (to give you a reasonable chance of closing the door after the light's inside. Then the relative intensity of your beam after a time t is: I 0.99999^(ct / 1 mile) At this rate your beam would have dimmed to one BILLIONTH of it original brightness after 11 seconds. Very quickly, it would all fizzle out, its original energy transformed to heat.
