Using gamma ray as energy source?

A friend asked me a question on how feasible it would be to use gamma rays as an energy source. So let's crunch some numbers: The wavelength of gamma rays is

\lambda=\frac{c}{f}=0.005 nm


Since the optimum length l for an antenna is

l=\frac{\lambda}{4}=0.00125 nm=1.25 pm


We are a bit in trouble here since the radius of the atom Sodium for instance is approximately 160 pm.
Physically it's just not possible to build such a small antenna.

Motivational paper (take 3)

Objective:
I want to be creative, do actual engineering work, solve really new problems and build things which really matter.

Summary:
Having worked in multiple fields of expertise I can distribute many different types of engineering work into the work of a team:

  • Experience in designing electronics circuitry
  • Experience with the basics of chip design
  • Experience with writing code in a high amount of different programming languages.

Motivations:
As I've already mentioned within my objective title,  my goal is simple.
I want novel problems to solve and also available means to actually accomplish the goal of implementing the solutions at front.
Here in Switzerland I don't have neither of it which is more than just a little depressing.
My intention is to just relocate and lead a life as I'm used to lead it here in Switzerland <!-- should I mention here that it mainly consists of Vodka/beer, cigarettes and porn in the evening and work during day? --> just with good work which is fair paid (your engineer salary are really fair!)
What I want is really new exciting engineering challenges for instance on how to build a first functional nano-scale quantum processor.
You give me that, plus food and a flat and I won't walk away from your company... Except somewhere else is a cooler problem to solve after I've solved yours.

Experience:

  • 2008-2011:
    • Study at ETHZ, department D-ITET
    • Freelancer in IT sector for multiple companies:
      • HotelPartner
      • Novartis
  • 2011-today:
    • Part-time student at ZHAW for electrical engineering
    • Freelancer in IT sector for multiple companies:
      • Novartis

Motivational paper (take 2)

Objective:
I wanna be creative, do actual engineering work, solve really new problems and build things which really matter.

Summary:
Having worked in multiple fields of expertise I can distribute many different types of engineering work into the work of a team:

  • Experience in designing electronics circuitry
  • Experience with the basics of chip design
  • Experience with writing code in a high amount of different programming languages.

Motivations:
<WORK IN PROGRESS>
Shoot me or give me job
</WORK IN PROGRESS>

Motivational paper (take 1)

I guess I have to rethink the "motivations"-part...

Objective:
I wanna be creative, do actual engineering, solve really new problems and build things which really matter.

Summary:
I solve problems.

Motivations:
Since a company requires novel innovations and needs to go forward instead of staying at the current state it has been the past few decades it would be pretty stupid not to employ me.
Because you've got a really interested mind here who's stuck in a country where the dominant class  is just busy telling to each other how great they consider each other for their wealth they have already shuffled together while sitting in their little glossy villas without any main objective other than shuffling their virtual money from point A to point B and back and multiplying it without any actual productive objective.
And I want to get the hell out of  here.
While for tourism it might be pretty nice (at least the first few weeks until you ran out of money because even the food here is fucking expensive) for me it's actually very frustrating.
Because useful equipment costs even fucking more money.
When you say something about missing funds they tell you to shut the fuck up because... well... it's so a rich country.
In practice science and engineering usually boils down to an experimental construction made from scrap metal and old recycling parts from a second hand store.
Except if you are working for one of these well known highly unethical companies like MonSanto, RUAG, Novartis, Roch or Nestle who are well known to kill people in abroad countries (as well yours) all the time.
But when you criticize that, you're nearly beaten as well since... well... Switzerland is such an ethical country and everyone is rich... right?
I've got to listen to shit like "Wow! Here you can say everything and hey! You're at least not shot."
At least in China there is only one party I must not dare to say anything against in order to get funding for innovative designs.
Here it's basically impossible to make it right... And no funding...
Yeah. I'm not shot. But basically I can do it myself because existing without any possibilities to work out anything relevant your whole life is absolutely pointless anyway.
So please... give me a job in China before I fucking drink and smoke myself to death of boredom and frustration here because I do not have any financial means for any serious scientific research if it's not about weapons or pesticides.
No one here wants anything cool and innovative.
You need an engineer? Just gimme a contract.

My trip to China (Chapter 4)

Today... Let's just say: I've found the StarBucks.
It's exactly as the StarBucks in Switzerland. I mean exactly the same.
Only that an Americano middle sized cup (for take away) is only 3.50 CHFr and not 5.00 CHFr.! ^_^

Agricultural paradise

Well... I didn't find it in time... Also as far as I could see... It's not really as interesting as some travelling blogs have described it.

20150204_170612

20150204_170624

20150204_170641

Lovers road

Well. I didn't go straight there either because I was stuck at the bubble tea and steamed bread corner where I've found fresh Manju (with red bean stuffing! *_*) as you can find a recipe for on my blog.
Also I've found Banh Bao... After this dinner I was so stuffed that I decided to roll back home.
Ahh! I talked Chinese a lot more today ^_^

20150204_185722

20150204_191321

My trip to China (Chapter 2)

Park in Zhuhai (珠海)

Actually just one of so many parks in 珠海. I passed by this place on my way to the 客车68号 (Bus number 68) to the office of Allwinner Technology.

20150202_12134420150202_12132520150202_12132020150202_121313

My way to Allwinner Technology

Since the security guard at the entrance already looked a bit confused when I sat down and tried to make clear to him with my dictionary that I was two hours too early for the meeting I've let it be to make pictures of the entrance.
Just be told, that the company has a beautiful modern new building now with leather seats and mings vases and two big red Chinese lanterns at the entrance.
A beautiful office building! *_*

20150202_13523820150202_13523120150202_13504120150202_13503720150202_13480920150202_13480420150202_13475720150202_13475220150202_13474720150202_133625

Dinner (sponsored by Allwinner)

Best food of my life (2.0)! ^^
我不想回来瑞士! (I don't wanna go back to Switzerland) *_*

Ah and btw, maybe I don't have to.
I seems as if the dinner has brought up some additional business ideas which would justify my employment at their company =D

20150202_18432820150202_184324

My trip to China (Chapter 1)

Lost clothes

Thanks to the Russian duty and tax office my clothes are still all in Moscow, which forced me to buy new ones at the stores around the corner (first pic). Actually it's not such a problem I guess, I think I look quiet good in these 0.30$ clothes ^^ (second pic) 20150131_18451820150131_192221

Food

After having had some trouble making myself understood I managed to get my favourite food after all. 20150201_183602

Spot the Durian

20150201_191002

Way back from the restaurant to my hotel

20150201_191013

Current mirror

Given, a complicated darlington circuitry:
darlington
We now replace the darlington pairs with single NPN transistors by defining: I_C=I_B \cdot a with a=(\beta+1)\cdot\beta and I_E=I_B \cdot b with b=(\beta+1)^2
darlington_replacement

Now we set:
I_{KD} = I_{B1} + I_{C3} = I_{B1} + I_{B3} \cdot a and I_{RL}=I_{C4}=I_{B4}\cdot a and I_{B2}=I_{B5} and I_{KD} + I_{C1} + I_{RL} = I_{E5} + I_{E2}
I_{KD} + I_{B1} \cdot a + I_{RL} = I_{B5} \cdot b + I_{B2} \cdot b = 2\cdot I_{B5}\cdot b = 2\cdot I_{B2}\cdot b
\Rightarrow I_{RL}=- a \cdot I_{KD} - I_{KD} + a^2 \cdot I_{B3} + 2 \cdot b \cdot I_{B2}

And resolve the current equation:
I_{B3} \cdot b = I_{E3} = I_{C5}+I_{B2}+I_{B5}
=I_{C5}+2 \cdot I_{B2}
=I_{C5}+2 \cdot I_{B5}
=a \cdot I_{B5}+2 \cdot I_{B5}=(a+2)\cdot I_{B5}=(a+2)\cdot I_{B2}

\Rightarrow I_{B2} = I_{B5} = \frac{1}{a+2} \cdot I_{E3} =\frac{b}{a+2} \cdot I_{B3}
I_{E1} = I_{B1} \cdot b = I_{B3}+I_{B4}

I_{C2} = I_{B2} \cdot a
= I_{E4}=I_{B4} \cdot b
\Rightarrow I_{B4} = \frac{a}{b}\cdot I_{B2}=\frac{a}{b}\cdot\frac{b}{a+2} \cdot I_{B3}

I_{RL}=\frac{a^2 b}{a^2 b + 2 a b +2}

ARM assembly, take 3

After having considered some comments from Mr./Ms. G I optimized my assembly code a little bit.
Here a better approach:

Output
deadbeef

11011110101011011011111011101111

00000000111111111111111111111111

Code:

.equ STRING_LENGTH, 32
.equ ZERO_CHARACTER, 0x30
.equ ONE_CHARACTER, 0x31
 
.data
Mask:
	.ascii  "%x\n\n"
.align 4 
 
varToPrint:
	.long 0xdeadbeef
.balign 8 
 
varToUnspace:
	.long 0xdeadbeef
.balign 8 
 
unspacedVarToPrint:
	.long 0xdeadbeef
.balign 8 
 
stringToPrint:
	.ascii "                                                                                  \n\n"
len = STRING_LENGTH
.balign STRING_LENGTH
 
unspacedStringToPrint:
	.ascii "                                                                                  \n\n"
len = STRING_LENGTH
.balign STRING_LENGTH
 
.text
.globl main
main:
	stmfd	sp!, {r0, r1, r2, r3, r4, r5, r6, r7, lr}	@ save the registers we use to the stack
 
	ldr	r3, AddrVarToPrint
	ldr	r6, [r3]
	ldr	r3, AddrVarToPrint
	str	r6, [r3]
 
	/*
	Generating string of binary representation:
		Address of variable in r0
		Address of target string in r1
	*/
	ldr	r0, AddrVarToPrint
	ldr	r1, AddrStringToPrint
	bl make_binary_number
	/*------------------------------------------*/
 
	/*
	Removing zeroes between the ones in binary value:
		Address of variable in r0
		Address of target variable in r1
	*/
	ldr	r0, AddrVarToPrint
	ldr	r1, AddrUnspacedVarToPrint
	bl remove_spaces
 
	/*
	Generating string of binary representation:
		Address of variable in r0
		Address of target string in r1
	*/
	ldr	r0, AddrUnspacedVarToPrint
	ldr	r1, AddrUnspacedStringToPrint
	bl make_binary_number
	/*------------------------------------------*/
 
	bl print_out_result
 
	b exit
 
/*-Fetching the values and printing them-----------------------*/
print_out_result:
	push	{r0, r1, r2, r3, r4, lr}
 
	ldr     r3, AddrMask
	movs	r0, r3
	ldr	r3, AddrVarToPrint
	ldr	r1, [r3]
	bl	printf
 
	ldr     r3, AddrStringToPrint 
	movs	r0, r3
	bl	printf
 
	ldr     r3, AddrUnspacedStringToPrint
	movs	r0, r3
	bl	printf
 
	pop	{r0, r1, r2, r3, r4, pc}
 
/*-Generate a binary representation string from integer--------*/
/* Address of variable in r0 */
/* Address of target string in r1 */
make_binary_number:
	push	{r2, r3, r4, r5, r6, r7, lr}
	ldr	r3, [r0] /* integer value of variable */
 
	movs	r4, $0 /* loop counter */
bin_loop:
	movs    r2, $0x1
	lsls	r2, r4 /* r2 = (0x01 >> counter) */
 
	movs	r6, $STRING_LENGTH-1
	subs	r6, r6, r4 /* idx = reg_length-counter */
 
	tst	r3, r2
	beq	no_one
 
	movs	r5, $ONE_CHARACTER
	strb	r5, [r1,r6]
	b end_bin_loop
 
no_one:
	movs	r5, $ZERO_CHARACTER
	strb	r5, [r1,r6]
	b end_bin_loop
 
end_bin_loop:
	adds	r4, r4,$1
	cmp	r4, $STRING_LENGTH
	bne	bin_loop
 
	pop	{r2, r3, r4, r5, r6, r7, pc}
 
/*-Removes spaces between ones---------------------------------*/
/* Taken we have: 0xdeadbeef
	Binary representation: 11011110101011011011111011101111
	Then the ones will be shifted together so that we get
	the following result: 00000000111111111111111111111111
*/
/* Address of variable in r0 */
/* Address of target variable in r1 */
remove_spaces:
	push	{r2, r3, r4, r5, r6, r7, lr}
	ldr	r6, [r0]
 
	movs	r4, $0
	movs	r5, $0
	movs	r7, $0
 
unspace_loop:
	movs    r2, $0x1
 
	lsls	r2, r4
 
	tst	r6, r2
	beq	end_unspace_loop
 
	lsls	r5, r5, $1
	adds	r5, r5, $1
 
end_unspace_loop:
	adds	r4, r4,$1
	cmp	r4, $STRING_LENGTH
	bne	unspace_loop
 
	str	r5, [r1]
 
	pop	{r2, r3, r4, r5, r6, r7, pc}
/*-------------------------------------------------------------*/
 
/*--------EXIT main(void) function -> return 0-----------------*/
exit:
	ldmfd	sp!, {r0, r1, r2, r3, r4, r5, r6, r7, pc}	@ restore registers before exit
	movs	r7, $1                  @ set r7 to 1 - the syscall for exit
	swi	0                       @ then invoke the syscall from linux
 
 
/*-----Variable pointers---------------------------------------*/
AddrMask:
	.word	Mask
 
AddrVarToPrint:
	.long	varToPrint
 
AddrVarToUnspace:
	.long	varToUnspace
 
AddrStringToPrint:
	.word stringToPrint
 
AddrUnspacedStringToPrint:
	.word unspacedStringToPrint
 
AddrUnspacedVarToPrint:
	.long unspacedVarToPrint

Mein potentielles schlechte Laune Ablassventil