Recent content by davidco2

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    Do all objects fall at the same rate when dropped from a height?

    So it is YES that glass marble and cannonball will hit the ground at different moments?
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    Do all objects fall at the same rate when dropped from a height?

    I just say billiard ball and a wooden ball with radius of 20m will not hit the ground at the same time, if dropped from 100m building (fall time will depend on size and weight of the object) and also bullet exiting barrel pointing 90degree upwards has the same speed as in moment hitting the...
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    Do all objects fall at the same rate when dropped from a height?

    it is not in vacuum... a real life situation with all influences included
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    Do all objects fall at the same rate when dropped from a height?

    One of us said: A metal ball and wooden ball regardless of weight and radius will hit the ground at the same time when dropped from any height (building) Second thing... is the speed of bullet exiting the barrel pointing upwards the same as it's speed when it hits the ground?
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    Find the Peak of a Curve Defined by Points

    This is a cross-section of the laser line and if the center of the line is on 4.3 (numerating above pixels as 1-6) the peak would be over 111 If I draw a graph in Excel using these values and set curve to smooth, the peak is drawn somewhere around 4.3
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    Find the Peak of a Curve Defined by Points

    I have a curve defined by some points. These points represent the pixel brightness on the image sensor For example get these values: 5 14 60 111 100 37 Where is the brightness peak? Somewhere between pixel 4 and 5... ~4,3 Is there a method to determine this? Something with a name or...
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    Do Red Lasers of 314mW Pose a Safety Risk?

    Thanks for the explanation and security warnings! I have another related question: This would be used in 3D scanner and on museum objects, to your experience what is the maximum mW rating of projected dot r=2mm that would not cause alternation of the surface/generate heat that could cause that...
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    Probably the WEIRDEST Sci-fi related question ever posted

    Can't he simply find a expiring black hole, calculate the time of its super explosion and jump in right before it explodes (but he should not reach it before the explosion). Since he would not die until he is inside the black hole, and as the black hole explodes he would be nicely and evenly...
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    Do Red Lasers of 314mW Pose a Safety Risk?

    If using 314mW red laser and cylindrical optics to project a line 500mm x 2mm, will it have brightness as 1mW laser that projects a dot with r=1mm since the area difference? 1000mm / (1mm^2*3.14) Would the projected line of that brightness be dangerous if bounced off the reflective surface...
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