<P> Another common occurrence of greyouts is in roller coaster riders . Many roller coasters put riders through positive g - forces , particularly in vertical loops and helixes . Roller coasters rarely have high enough negative g - forces to induce redouts , as most low - g elements are designed to simulate weightlessness . </P>
<P> Another common occurrence of greyouts is in roller coaster riders . Many roller coasters put riders through positive g - forces , particularly in vertical loops and helixes . Roller coasters rarely have high enough negative g - forces to induce redouts , as most low - g elements are designed to simulate weightlessness . </P>
why do my eyes go black on roller coasters
why do my eyes go black on roller coasters
Many roller coasters put riders through positive g - forces
Many roller coasters put riders through positive g - forces