Recent content by GeorgeV

Makes sense. Thanks.

I can remember from my distant school physics days that the image in a mirror lies beyond the mirror. But how does a modern camera sensor "know" this. If I face a mirror with my canon camera which has a cmos sensor and usm lens, it autofocuses correctly on the part of the reflection I select...

Yes, but assuming you have received compatible blood ( and you still seem to be alive) these are generally clinically insignificant and will disappear. No Future tests can show that you have previously been transfused. The tests rely on the detection of antibodies you have produced following...

Hi all, I have a medical science background, retired now but still always like to ask the questions "how" and "why", especially in this hi-tech age. Get a little frustrated when I can't find answers. Often attempt to understand that which I have no hope of understanding.