Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Drop Splashing on a Dry Smooth Surface   The corona splash due to the impact of a liquid drop on a smooth dry
substrate is investigated with high speed photography. A striking phenomenon is
observed: splashing can be completely suppressed by decreasing the pressure of
the surrounding gas. The threshold pressure where a splash first occurs is
measured as a function of the impact velocity and found to scale with the
molecular weight of the gas and the viscosity of the liquid. Both experimental
scaling relations support a model in which compressible effects in the gas are
responsible for splashing in liquid solid impacts.

12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin