Some of the Magnus change over time, gaining a stronger, weaker, or all together different effect.

But celebrities actually have a weak effect on baby names.

Some substances that don't appear to be magnetic do in fact show a different, much weaker effect.

In those cases, atoms and the material made up of them will show weak magnetic effects.

For both types a further distinction is made between very strong and weaker effects.

Most studies report that peer influence has a very weak effect on the young person's religiousness.

Also, the weaker effects are part of any stronger effect.

Without the thyroid hormone, epinephrine would have only a weak effect.

Its a pretty weak effect, you don't notice it, but a lot of air the size of a state does.

Because each contributory gene has a weak effect, none stands out.