837 reputation
415
bio website sigrlami.eu
location Odessa, Ukraine
age 25
visits member for 2 years, 11 months
seen Jul 22 at 11:01

Haskeller, Cryptography/Mathematics/Physics enthusiast, OSS & OSHW supporter, DSP/SDR/CR pusher

https://twitter.com/sigrlami


Jul
18
comment Does string theory have a notion of vacuum?
@arnold-neumaier could you accept this answer?
Jul
13
revised If the ionosphere reflects radio waves then why use satellites?
added 3 characters in body
Jul
13
comment If the ionosphere reflects radio waves then why use satellites?
@Asher I'm perfectly aware of the speed of light.yes, if it's 1 bit in perfect conditions. Consider transmitting something like video over ionosphere. I made example in a sense that communication complete when data is fully retrieved on the other side. You can lose a lof of data and waiting for repeat bits. Anyway, updated my answer to minutes-seconds condition.
Jul
13
revised If the ionosphere reflects radio waves then why use satellites?
added 159 characters in body
Jul
13
comment If the ionosphere reflects radio waves then why use satellites?
@Asher x2 distance propagation, from earth - ionosphere-earth. Satellites - straight line from one to another in vacuum. Earth-Inosphere have bad conditions for propagation - storm, humidity zones, etc. Look at image I've add
Jul
13
answered If the ionosphere reflects radio waves then why use satellites?
Apr
21
comment Why is Near Field Communication (NFC) range limited to about 20cm?
@user1147688 you should specify country of origin. EU bio-metric ePassports use RFID chips that placed in contact scanner, this allows to create RFID tag extremely small and probably operates at different frequencies
Sep
30
awarded  Explainer
Aug
31
awarded  Yearling
Jul
15
answered A database for review literature in theoretical physics
Dec
26
awarded  Autobiographer
Dec
10
revised Detecting EM radiation using android app
adopt markup
Dec
10
comment Detecting EM radiation using android app
It might be interesting to read this question about NFC too, since it also uses magnetic fields physics.stackexchange.com/questions/44037/…
Dec
10
suggested approved edit on Detecting EM radiation using android app
Dec
10
answered Detecting EM radiation using android app
Dec
10
answered Why Cronin Effect Happens?
Dec
8
comment Why Cronin Effect Happens?
would you be interested in explanation in terms of hadrons and partons?
Dec
7
revised Why Cronin Effect Happens?
add quote markup
Dec
7
comment Why Cronin Effect Happens?
where did you get this quote from?
Dec
7
comment Why Cronin Effect Happens?
@Yair you should extend your question and specify that you want mathematical explanation of effect. Also, I think it's more related to Nuclear Physics and QCD, consider to change some tags.