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2. Train wheel - Wikipedia

   en.wikipedia.org/wiki/Train_wheel

   A train wheel or rail wheel is a type of wheel specially designed for use on railway tracks. The wheel acts as a rolling component, typically press fitted onto an axle and mounted directly on a railway carriage or locomotive , or indirectly on a bogie (in the UK), also called a truck (in North America).

3. Comparison of train and tram tracks - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_train_and...

   The wheel flange presses against the side of the curved rail [citation needed] so the "contact point" between rail and wheel moves a few millimeters outwards, making the effective diameter of the outer wheel temporarily larger, and equally opposite: the effective diameter of the inner wheel effectively becomes temporarily smaller.

4. Buckboard - Wikipedia

   en.wikipedia.org/wiki/Buckboard

   The buckboard is steered by its front wheels, which are connected by a single axle. The front and rear axle are connected by a platform of one or more boards to which the front axle is connected on a pivoting joint at its midpoint. A buckboard wagon often carries a seat for a driver. Such a seat may be supported by elliptical springs.

5. The symptoms of influenza A and B can be identical, experts ...

   www.aol.com/news/symptoms-influenza-b-identical...

   It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the same. There are some notable differences between flu A and flu B strains ...

6. Continuous track - Wikipedia

   en.wikipedia.org/wiki/Continuous_track

   Overlapped and interleaved wheels improve performance (including fuel consumption) by loading the track more evenly. It also must have extended the life of the tracks and possibly of the wheels. [citation needed] The wheels also better protect the vehicle from enemy fire, and mobility is improved when some wheels are missing.

7. Which Foods Are Actually 'Healthy'? The FDA Will Now Tell You

   www.aol.com/foods-actually-healthy-fda-now...

   The government agency is tightening its standards for "healthy" claims. And for the first time in 30 years, its labeling rules will be updated to reflect new nutrition standards.

8. More than a dozen states have passed new laws that led to ...

   www.aol.com/more-dozen-states-passed-laws...

   In Texas, Florida, and more than a dozen other states, users who try to access the world’s largest pornography website are greeted by a surprising sight: a message on a black screen telling them ...

9. Roller coaster wheel assembly - Wikipedia

   en.wikipedia.org/wiki/Roller_coaster_wheel_assembly

   They often consist of at least 3 wheels per assembly, but can contain more. The typical arrangement of the wheels are: Running wheels (also known as road wheels or tractor wheels): positioned on the top of the rail, bearing the weight of the train. Side friction wheels: positioned on a horizontal plane, either inside or outside of the rails ...