12.28.2012

HP 15C Limited Edition RPN Programmable Scientific Calculator.

My dad asked what I wanted for Christmas, and I thought for a while.
What would I use on a daily basis in college, and enjoy doing so?

The HP 15C was my answer.

First made from 1982-1989 and then released as a limited edition in 2011, with only 10,000 made, this scientific calculator was a standard for scientists and engineers everywhere. It's a cousin of the famous HP 12C financial calculator, which my dad happens to use almost daily.

In operation, it uses HP's famed "RPN" input method: Reverse Polish Notation. Rather than inputting the operator, then the operation, then the operand, and then the equals button, you enter the operator, the operand, and then the operation. Example:

Problem: 2*3=?

RPN: 2 [enter] 3 [x]
Algebraic (normal) input: 2 [x] 3 [=] 6

This is advantageous because it affords fewer keystrokes, 4 vs. 5. The advantage is even more apparent when looking at more complex calculations.

Problem: (2+3)(5-1)=?

RPN: 2 [enter] 3 [+] 5 [enter] 1 [-] [x]
Algebraic: [(] 2 [+] 3 [)] [x] [(] 5 [-] 1 [)] [=]

9 vs. 12 keystrokes.

And it's just more fun to use!

This calculator can do numeric integration, complex calculations, matrix algebra, equation solving, and can execute programs. Overall a fun and useful tool.












12.27.2012

Vintage Mechanical Pencil Reviews

Here are three videos I made of various vintage mechanical twister style pencils I've got. Enjoy!


12.22.2012

Comments

Hi blogosphere,
I've recently been hit with a couple spam messages, so rather than use CAPTCHA and annoy my actual readers, I'm adding comment moderation. Your comments will appear on my blog, but I will verify them first.
Thanks for your understanding!

--Vikram

12.16.2012

uni Kuru-Toga Mechanical Pencil video review

Hello blogosphere,
Here's a pencil that I've used almost exclusively for all my notetaking during my first semester in college. It's held up beautifully over the ~5 months that I've had it, and it's seen some heavy use. In .5mm, it is a great pencil. Below, you can see more about this pencil in the official SuperVpower review of the uni Kuru-Toga!


12.12.2012

12/12/12 at 0:12:12 and 12:12:12



Quick post; I gotta go real soon, just wanted to let you know that I caught both 12/12/12 at 12:12:12's! :)

11.27.2012

New device, doesn't work / Don't buy a WikiReader


Technology...
Just received my new WikiReader--if you've never heard of it, it's a small device that basically is a Wikipedia reader, offline.
Problem is, mine doesn't work.
It doesn't get past the initial on screen when powered up. I was really looking forward to being able to use it.
I emailed tech support, but don't think I will get a response, unfortunately.
One consolation I have is that I still have my green Machinery's Handbook 16th ed. from 1962--which will always give me instant access to almost all te engineering info, formulae, sin cos tan log tables, and diagrams, I need.
Tech, especially new things that don't work as expected, are extremely frustrating.


10.24.2012

Another Hiatus.

Hi everyone,

I'm getting really busy here at the U of I, with marching band, German, and of course the engineering curriculum beginning to pick up a lot of steam very quickly. So, I'm gonna put this blog on a hiatus, during which I will try to stay afloat.

Not going away permanently, just for a bit.

Till next time,

Vikram

8.21.2012

First pencast from college!

Sorry about the image--I only brought my small digital camera to school, no scanner...and since I'm running Debian OS 6.0.5 on my 2004 ThinkPad X31, I don't know if mine from home would work. Anyway...it would not fit on my desk along with all my other stuff! But yeah--college is great so far, especially since there are no classes as of yet and I am just in BAND from morning till night. It is fantastic.

8.19.2012

Off to college!

Yep, just a quick mobile post--it's 4:36 am here and I'm leaving for college in a couple of hours, for band camp at the University of Illinois Urbana-Champaign.

8.16.2012

Lamy Vista fountain pen review


It’s been a cool two years or so since I bought this pen from a shop in Wiesbaden, Hessen, Germany—and honestly, it’s my favorite pen.
                Period.
                Everything from the totally-transparent , industrial modern styling to the smooth nib and comfortable writing makes this pen the top one, for me. It’s been a faithful companion for this time, even spending some time in a friend’s car while I wondered where my pen had fallen out of my pocket! Believe me, I was distraught until I saw it sitting in the cupholder a couple months later.
                The ergonomics may not suit everyone’s writing style, given that the pen’s molded triangle grip forces you to to hold the pen in the (correct) grip every time. Not a problem for me, as this was one of my first true fountain pens.
                What makes this one even more special for me is that I got it while I was on a scholarship-sponsored 3-week trip to Germany—it holds memories of that fantastic time I had there with it!
                Originally I used the Lamy carts I bought at the time I got the pen, but then my Dad gave me one of his Lamy converters, so I used his blue Parker Quink in it for the longest time. About a month ago, I had the chance to get some different ink, so I opted for this not-too-basic black Noodler’s Bulletproof Black. It flows really well, is really truly deep black, and waterproof—all qualities that the previous ink didn’t really have. I’m in heaven—and on my second fill of this awesome ink in this great pen.
                In any case, the fact that I’m rambling on about the man virtues of this pen (whoops—missed the fact that the nibs are totally user-interchangeable) tells you that it’s awesome.  If you’re in the market for a fountain pen, even if you already have a Safari, try some new ink in this awesome fountain pen, the clear, always-ready Vista by Lamy!
                [Another thing I forgot to add in the handwritten review is that you can always see how much ink is left in the converter, making it much more practical for everyday use; you know how much you can write before it runs out of juice!]



detail of the Lamy branding, minimal.

great pocket clip--actually useful!


posted.

detail of the nib. nib creep is due to the ink, noodler's bulletproof black

8.07.2012

Invisible Ink and Index Card Burning.

Failed attempts.


Closeup of above (left).

The successful attempts (L to R): "fire in the hole!"; "appear!"; "invisible ink"

8.03.2012

Retro 51 Tornado Lava Flow Fountain Pen Review

 Retro 51 Tornado LAVA FLOW fountain pen
First thing I thought when I saw this pen: whoa. That looks really cool! Upon opening the elaborate packaging, the luster of the yellow, orange, and red-on-grey body reflects the light emphasizing the three-dimensional appearance of the material.
                As for the writing and nib quality—it’s pretty smooth and by far the biggest nib I have seen.
                Ever.
                The pen takes short international cartridges, but as I own almost exclusively Lamy pens, which use their own proprietary long cartridges, I was kind of out of luck. But I did manage to procure a syringe to fill up the original cart it came with, so all was well. Crisis averted.
                This is, however, a pretty short pen—it feels kind of unbalanced with the cap posted, but too short even for my average-sized hands with the pen unposted. Just me.
                Of course, that doesn’t change the fact that this pen looks absolutely amazing in person—the pics definitely don’t do it justice.
                When I’m looking for a bold pen to make a short note, or a relatively comfortable pen to write medium-length pieces with, I turn to the Tornado.
                Overall rating: 4.5/5. Though it suffers from very slight balance issues, it looks cool and writes very well, with little-to-no scratchiness and even ink flow. Definitely recommended.
 






7.31.2012

Homemade Notepads.



The Giant Scratch Pad. 

Inner of above.

Small thin notepad.

Inner of above.

Portable fastened with bolts, nylon.

Inner of above.

Binding Posts.

Two-hole punch.