Beginners Definition and 161 Threads

Say 2 observers are moving with a constant non-zero velocity with respect to one another. Each sees the others clock running slow but since they both know about relativity they know that the other is infact aging at the same rate as they are. They just observe otherwise. To the layman this begs...

I'm in the first year of mechanical engineering and can't afford a Fortran textbook. Does anyone have a beginners guide that would be suitable for the level I need to learn? I need to know that basics. Thanks in advance my friends.

could anybody be kind to explain what is cell division to me please? i only know is that its chromotins duplicated.

I am reading an old book about Carbon Dating and it is really boring, I dstill havenot found out there is anything interesting for me to keep going with time continuum, continuum continuum, again and again...So would you please introduce me some (old or new) interesting books on the topic for me...

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I need some help here guys. I'm looking at three books about gems and crystals and I want to see what y'all recommend. The three are the following: Stones Alive! by Trintress, The Crystal Bible by Judy Hall, and Healing Crystals by Cassandra Eason. Keep in mind, guys, that I'm just a beginner...

hi all, i have a general interest in the big questions in physics but am no einstein. i am hoping that someone here may take the time to answer what i think maybe a basic flaw in my understanding of these things. my understanding of einsteins notion of gravity is that a mass bends...

Has anyone here done or know how? I'm looking for a brief tutorial on how to pick somewhat simple locks.

Can someone explain music theory?

I want to venture into number theory and I was hoping to get some book recommendation from you guys. Which books do you think best describes and has examples on number theory for a beginner?

Hi, Can someone recommend me a beginners to intermediate book on physics, the book or books should cover the standard subjects: motion, kinematics ,the study of waves(full spectrum, light, forces,...). I'm doing my first year of computer science and always had physics in dutch, now that...