"have observed so far" is correct and usable in written English.
You can use it when you want to refer to something you have noticed to this point in time. For example: "I have observed so far that the students are making a lot of progress."
Given that oganesson, the heaviest element that we have observed so far, is already acting strangely16, it is not unreasonable to imagine even heavier elements with even stranger properties, perhaps harnessing once again the potential for science fiction to turn into science fact.
If the Sun, on the other hand, is capable of producing the large spot suggested by Shibata et al.13, then this assumption is likely violated, as the chromospheric emission of the Sun, in connection with such a large spot, would be dramatically larger than what we have observed so far.
A still image of a visualization of the merging black holes that LIGO and Virgo have observed so far.
These two datasets (pancreas and testis) are the most extreme ones we have observed so far with regard to normalization artifacts.
The VAS coverage rates that we have observed so far in Tanzania need to be sustained and monitored regularly if we are to reach the MDGs in 2015.
However, based on the stability of the trait that we have observed so far, any reduction of oleic acid content due to the environment is likely to be minor because very little FAD2 enzyme activity remains in developing seeds in the mutant FAD2-1A and FAD2-1B lines.
In order to get enough matter to match observations, however, you need larger amounts of CP-violation than what we've observed so far.
What I've observed so far has reinforced some hard truths about commuting.
"What we've observed so far has been a little on the milder side," Dr. Breiman said.
With that in mind, here are a few intriguing conversation partners that DealBook has observed so far:.
Based on what I've observed so far, I'm looking forward to the new projects that Digital Collections will be bringing to the table for the Duke community next year.
