helical

Progress does tend to be sort of helical, doesn’t it?

With video some new thinking was needed, hence the helical scan.

The spinning helical head should still produce data.

DNA exists in a double helical form almost always.

As it turned out helical scan was the future for data and audio storage too.

It returned a detailed image of a three-part protein with two long helical arms in the middle.

We may properly guess that the handedness of the helical copper coil determines the direction the train takes?

I learned machining, and made gears in a production setting, mostly straight bevel, but some spur, helical and internals.

Compare to helical scan tape systems like VHS and DAT/DDS where the tape heads are moving very quickly past the tape but the tape itself is not really fast at all.

In cases where one must screw a steel fastener into a threaded aluminum piece, a helical insert is usually prescribed.

We take for granted that the speed of light is the universal speed limit and that DNA has a helical shape, but a century ago we knew neither of these things.

But what they are really saying is that we haven't found any so far. I remember studying genetics and being told about junk DNA, even Francis Crick, co-discoverer of DNA’s double-helical structure, suspected it was “little better than junk.” Since then this opinion has changed.

CTs use essentially an X-ray beam that travels in a helical path around your body, and then use math to construct a 3D image, PET is the one where you drink an isotope, and they "catch" the positrons emitted from the radioactive material in your body.