Light streams from the branches of trees in this series from photographer Vitor Schietti. The effect is created with a combination of fireworks, long-exposure photography, and compositing. I love how the falling sparks create streaklines just like so many flow visualization diagnostics do! (Image credit: V. Schietti; via Colossal)
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Embers fly through the Kincade wildfire leaving streaks of light that reveal the strong winds helping drive the fire. This unintentional flow visualization mirrors techniques used by researchers to understand how flows are moving. The shutter of the camera remains open for a fixed time, so the length of each streak tells us about the speed of the flow. Longer streaks occur where embers moved faster.Â
Here we see the longest streaks in the upper left side of the image, which tells us that the wind was moving faster there than it did at lower heights, like near the photographer in the picture. Thatâs in keeping with what we would expect. In general, winds move faster above the ground than they do near the surface. That speed difference is one of the reasons wildfires are so difficult to contain; a single ember caught by high winds is easily carried to unburnt areas, allowing the fire to spread more quickly than if it had to burn along the ground. (Image credit: J. Edelson/Getty Images; via Wired)
Graphene powder swirls in alcohol in this prize-winning photo from this yearâs Engineering and Physical Sciences Research Council photography competition in the UK. The image was captured while producing graphene ink that can print circuits directly onto paper. According to the researcherâs description, this ink is forced through micrometer-sized capillaries at high pressure to rip the layers apart and produce a smooth, conductive ink in solution. In this photo, we seem to see more conventional mixing driven by the powderâs injection and the variations in surface tension due to the alcohol and its evaporation. The graphene leaves behind beautiful streaklines that highlight its path as it mixes. (Image credit: J. Macleod; via Discover)
As this smoke visualization shows, trees have a significant impact on airflow around them. Flow in the image is from left to right. On the left, the upstream air is traveling in smooth, laminar lines that are quickly disrupted as the flow moves into the trees. After the first shorter trees, flow inside the wooded area has been broken up and slowed. Above the canopy, the smoke streaklines have also slowed and become more turbulent. Understanding how wind and trees interact is important in a variety of applications, including when adding renewable energy options to buildings and when predicting the spread of forest fires. (Image credit: W. Frank et al.)
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Streakline (SL) is a fan character of mine. Their creation was prompted by an idea that I don't think has been explored in canon: the ex-Autobot Decepticon.
Yes, the jet traitor is a trope (see: Pharma, maybe Brainstorm), but I wanted a true defector -- someone who has had a change of spark along with faction, driven by nature and conviction, not perceived necessity. Problem is, I'm not sure what brought about the change in the first place. The comic is me toying with the thought that SL's trine, along with all the fanon connotations of that, might have had something to do with it. Perhaps, after the deaths of their trinemates, SL in grief thought that the Decepticons could end the war faster through a more liberal application of violence, paradoxically decreasing the total number of casualties. Perhaps the others were lynched for being Seekers when Starscream's armada carpet-bombed yet another Autobot base. There never were many Autobot fliers.
Perhaps SL sold out their trinemates, when asked to prove their loyalty to the Decepticons. This would not be beneath SL.
A deep-cover agent in the Autobot forces, SL gathers and relays sensitive intelligence to the Decepticons. In the current timeline, though, they are living a decent life among the Autobots on a revitalised Cybertron as per RID, cover unbroken. Outwardly, SL is affable, talkative, and likes engex a bit too much. SL displays prejudice openly; they often make quips about fliers being vastly superior to grounders and forged Cybertronians being better than cold-constructed. This is a holdover from SL's pre-war occupation; their trine choreographed and performed aerial manoeuvres during festivals and for private audiences. One might consider them artists, i.e. rather high-class in the old society. SL's apologies, if called out on the quips, are often half-sparked and always insincere. However, SL insists that they believe in "equal rights for knock-offs," and has indeed fought in the name of the Autobots and equality.
Inwardly, SL does believe in equality of a sort -- the Decepticon sort. SL and trine joined the Autobots because it was what the people they knew did, the people who once served the Senate, the people they once performed for, the police and the scientists and the artists. SL joined the Decepticons while conflicted, trineless, and afraid. They discovered some of Megatron's old pamphlets, and found conviction again.
As much as I can imagine the Decepticons as Communists in Space (Ă la Megatron quoting Marx), I believe the ideologies differ at a fundamental level, even ignoring respective implementations. The famous "from each according to ability, to each according to need" was never a motto of the Decepticons. Instead, it was "from each according to ability, to each according to ability" since the very beginning. Almost Functionalist, but with the labourers on top. So hopefully you can see what kind of trash receptacle SL is, to believe in this system. SL has cunning in spades and is a very agile flier, so they think that they have what it takes to live the good life in the case of Decepticon victory. Moreover, that they will get the chance to lord it over others, feeding their superiority complex with abandon.
In conclusion, that comic was a very sympathetic portrayal of Streakline.