6 basic tools needed for bicycle repair

Chain tool: This is a special tool that sort of cuts a bicycle chain, then re-connects the chain. The picture below is of a chain tool.

Air pump: This one is so simple, it shouldn't be forgotten. An air pump for your tires. If it's small enough and light-weight enough, you can probably even carry it with you while biking.

Puncture repair kit: Yep, this one's also for your tires. Carry it with you always when biking, especially if you're going trail riding or mountain biking.

Screwdrivers: You can look over your bike to see if you will need both flathead and Phillips screwdrivers, but you most likely will.

Allen wrenches: These little hex key wrenches can come in quite handy. If you're out biking, you probably don't need the whole set of these wrenches, but it's handy to at least have the one or two needed for your bike.

Tire iron: Yep, they make tire irons for bicycle's, also. This tool is nice to have at home whenever you need to change an inner tube.

There are, of course, plenty of more tools that can be used for bicycle repair, but this list gives the basics needed for most bike riders. If you are a true bicycle repair enthusiast, check with one of your local bike shops and ask what kind of tools they have available.

Theories of time travel simplified

Technically, all of us are time travelers. We move through time slowly, seconds at a time like a worm sliding forward an inch at a time. But will it ever be possible to ever travel backward in time? Or forward in time by leaps and bounds, by months and years?

Possibly. Albert Einstein’s theory of special relativity left the door open for the potentiality of time travel by showing that distance and time are not absolutes.

But how could time travel possibly work? Most are based on Albert Einstein’s theories of relativity.

Wormholes

Some scientists, include Kip Thorne of the California Institute for Technology and Richard Gott with Princeton University, speculate that wormholes could exist that could sort of be used as shortcuts in time and space. In theory, a person would be able to jump through one of these wormhole tunnels and come out on the other side in a different place and time. One big downside is that to create such a wormhole, huge amounts of energy would be needed, more than even several suns could provide.

Speed of Light

If it were possible for a person or a vehicle to move the speed of light, that person or vehicle would in a sense be traveling through time, according to principles of relativity. By the time the traveler returned, from the point of view of anyone left behind a longer time would have passed than had passed for the traveler. This is also called time dilation. But in this form of time travel, the traveler would only be able to move into the future.

Faster-Than-Light Speeds

If someone were able to move faster than the speed of light, in theory at the speed of light they would reach a point where time did not exist. Then, by moving faster than the speed of light, they would move into what some call negative time. In other words, they would be moving backward in time.