Skip to main content

marvel - Why doesn't Spider-Man's web stick to his hands?


Why does Spider-Man's web stick to objects, but not to Spider-Man's hands? When he shoots a strand out, it sticks to buildings. He grabs the strand and swings, and is able to let go. How is this possible?




Answer



He has several kinds of webbing; the stickiness has to do with how it's formed.


There's lots of info on how his shooters work on the Marvel Wiki, but to break it down:


Take a look at the Web-Shooters page on the aforementioned Wiki; it basically says what he has said a few times in the comics; they have settings that allow him to adjust what he shoots.



The effect of the very small turbine pump vanes is to compress (shear) the web fluid and then force it, under pressure, through the spinneret holes which cold-draws it (stretches it: the process wherein nylon gains a four-fold increase in tensile strength), then extrudes it through the air where it solidifies. As the web fluid exits the spinneret holes, it is attracted to itself electrostatically and thus can form complex shapes. The spinneret holes have three sets of adjustable, staggered openings around the turbine which permit a single web line, a more complex, spun web line, and a thick stream.



Web-Shooters


Web-Shooter close-up


So, what we have is:




  • Globs of sticky webbing --> a thick stream.

  • Lines of swinging webbing --> spun web line

  • Sticky lines of webbing. --> single web line


What he swings on is the 'Spun Web Line'; it's extruded in such a way as to yield a very strong, but not particularly sticky line; something to do with the 'Spinning' seems to dry it out quickly. (It should be mentioned, however, that the first fraction of a second of the shot is probably the 'glob' type, to allow it to stick to it's target. Referred to as the 'attachment disk' below.)


To quote that page again:



On contact with air, the long-chain polymer knits and forms an extremely tough, flexible fiber with extraordinary adhesive properties. The web fluid's adhesive quality diminishes rapidly with exposure to air. (Where it does not make contact with air, such as the attachment disk of the web-shooter, it remains very adhesive.)




Now, the physics of it are another issue.. but that's the 'canon' answer :)


Comments

Post a Comment

Popular posts from this blog

harry potter - Do the Kwikspell courses work?

In Harry Potter we are introduced to Kwikspell course in The Chamber of Secrets (and never hear about it again). We see Filch taking courses, presumably by mail. The descriptions of Kwikspell make me think it is for people who are weak in magic (kind of like how Neville was supposed to be when he was younger), but had magic in them nonetheless. However, Ron's comments later in the chapter make it sound like it is mainly for Squibs to learn magic. However, it is strongly implied through out all the books that Squibs are essentially Muggles, and will never be able to do magic. How then is a Kwikspell course supposed to work? Do we have any information to know if it works at all? Is it a scam? An answer from any level of canon is welcome. Answer Kwikspell courses are (probably) useful to some wizards, but not to squibs. The Kwikspell course literature comes with two testimonials. Madam Z. Nettles of Topsham writes: ‘I had no memory for incantations and my potions were a family joke...
Post a Comment
Read more

futurama - How much time is lost in 'Time Keeps on Slippin''

In time Keeps on Slippin' , Farnsworth creates a basketball team which he matures by abusing Chronitons. This leads to time skipping forward by random, but ever increasing amounts. How much time was skipped in this way? Answer Unfortunately, I don't think a good estimate can be made for this, for two reasons: Many of the time skips move forward by an indeterminate amount of time. At one point, the Professor mentions localized regions of space skipping forward much more than others. We then see two young boys on the street below complaining about having to pay social security, only to suddenly become senior citizens and start complaining about wanting their money. Thus, each individual could have experienced a different amount of time skippage.
Post a Comment
Read more

star wars - What "exactly" happens when someone turns to the Dark Side?

When I saw the original Star Wars saga as a kid, the concept of the Dark Side imprinted in me was quite simple. You did a bad thing, so you're a bad person so you go to the Dark Side and keep doing bad things. Now, obviously this doesn't hold true in reality. In my mind it is perfectly reasonable for Luke to kill the Emperor and Vader and then just flee the Death Star and rejoin the Alliance. After all they are at war, those are enemy officers that have captured him and are taunting him by threatening with death of all loved ones and the whole operation was intended to kill the Emperor anyway. The same would hold true for Anakin. He could have killed Mace Windu to save the Chancellor and Padme but that doesn't mean he's going to then go mad and kill all Jedis including children. It doesn't add up from a merely psychological point of view. He had a set of objectives and that made him want to keep the Chancellor alive (quite valid by the way, Mace Windu is quite clums...
Post a Comment
Read more

star trek - Warning regarding forward saucer section in Nemesis?

In Star Trek: Nemesis , just before the Enterprise rams into the Scimitar, Picard sends a text message from his captain's chair arm pad to Troi — who is manning the helm in lieu of the crewman who was just blown out through what was once the view screen — indicating that she should put full impulse on standby. (Literally, if you watch the scene closely, Troi's console prefaces the order with "TXT MSG" !) My question is: Did Picard also somehow warn crew members in the forward saucer section about what was about to happen? The ramming of the Scimitar was a heat of the moment decision. Considering that he also resorted to calling the auto-destruct sequence shortly after (which ended up being offline), he probably was of the mindset that any losses would be acceptable in order to hault Shinzon's march to Earth. Still, I'm curious. Answer The original script indicates that he called for the crew to " brace for impact ". Whether that call (or the comma...
Post a Comment
Read more