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ophidian can slither across two-dimensional Earth’s surface without leg , but not exclusively without aid . That ’s because snake in the grass scale act as friction hooks which enamor in pugnacious point on surfaces , a new study show .
funnily , the finding could finally lead to automatic snakes that move more naturally .
A corn snake used in experiments that showed how snake scales help serpentine movement on flat surfaces.
" When I first pop out canvas Snake , we did n’t have personal computers or robotics , " tell David Hu , a mechanically skillful engineer at Georgia Tech , " but now we have the putz to emulate nature . "
Hu has always found fascination in puzzling out the raw campaign of creatures that have mystified scientists . As a younger researcher studying at MIT , he show how mosquitoes can use their spindly legs tostand on surfacesranging from walls to water .
The serpentine apparent movement of snakes present perhaps an irresistible challenge — decrypt anancient movementso unlike the flying , swim , walking and running used by other animals .
Slither and slide
Biologists have antecedently observed the strange properties of snake scales , but no one had seek to connect them with how snakes move until now . Some had speculated that snake need twigs or rocks to push against , but betray to excuse how snake navigated middling featureless surfaces such as desert litoral .
" We want to amount up with the simplest potential explanation for how snakes move on monotonous flat coat , " Hu toldLiveScience .
The Georgia Tech researchers first tested the ophidian weighing machine friction by slip unconscious ophidian across flat surfaces . Snakes slid easily in the advancing direction , but their scale friction resisted sliding backwards or sideways .
That test offer a friction coefficient that they could plug into computer models , which they used to predict how well ophidian might move on different surface .
Next , Hu and his colleagues register the apparent movement of the awakened Snake on very smooth fibreboard , and on material that provides a relatively unsmooth aerofoil . The snake had trouble moving on the smooth fiberboard , but could move more well on a textile - covered board .
However , the snakes ran into bowel movement difficulties again when researchers fitted them with a cloth jacket crown , which essentially eliminated the musical scale rubbing .
big gallop snakes
serpent do n’t just slide when caught on clip - lapse tv camera . They can also move in the well - known sidewinding motion , or even scrunch themselves up like an accordion .
" Snakes have a lot of different direction of moving , sort of like a horse that can trot or gallop , " Hu said .
The subject area ’s model had successfully used the scale clash to call much of the snake movement , but only account for 65 percent of the upper . Something else was miss .
Then the researchers noticed that the snakes were uprise parts of their bodies as they slithered forrader on the recorded TV . Hu described it as " active weight statistical distribution " that allowed serpent to concentrate their weight on a few points and move more quickly .
" That can lead to sidewinding , but they can also more subtly shift their weighting , " Hu noted . " It will change the speed of ophidian a great hatful . "
The work represents a first step in good understand serpentine move , as detailed in the June 8 issue of the journalProceedings of the National Academy of Sciences .
Hu pointed out that some of the Snake River ’s high speeds are still unexplained by the good example , and may have to do with snakes have precise muscle mastery over each scale .
" As we were waken them , we could see them twinge individual scales , " Hu explained , and compared the snake - scale connection to goose bumps on human figure .
If that soundsa bit creepy , do n’t worry — good deal of people sense the same way .
