Physics, 05.07.2019 00:30 chloe1107

What type of electromagnetic wave is used in security alarms

Answers: 1

Show answers

Answers

Answer from: coopkm24

infrared radiations are used in security alarms. in these kind of security alarms , when a beam of infrared radiation is blocked by an intruder, it triggers the security alarms for a fixed amount of time.it is used because it is invisible and can not be detected by an intruder. warm objects emits infrared radiation. this fact is used to detect in dark.

Answer from: Quest

Dis your correct answer
An airplane is flying at a constant velocity through the air. what is the relationship between the m

Answer from: Quest

quantum mechanics or quantum physics is physics of very small objects (particles) and physical entities.

quantum physics has some parallels to our macro world and some pretty unique ideas which theoretically and mathematically proven to be true even though we will never be able to access them because of our size.

there are many types of particles: subatomic, elementary etc.

subatomic means they are smaller than atom, elementary means they are at the very basis of everything.

subatomic particles are for eg. protons, neutrons but not electrons.

elementary particles are categorised into 3 groups by what they do.

these 3 groups are quarks, leptons and bosons.

light for example is a particle more precisely a photon a part of leptons.

proton (subatomic particle) is made out of 2 up quarks and 1 down quark each of these has a fractional charge like $\frac{1}{3}$ . (i crazy)

most famous scientist who contributed to this physics are:

max planckalbert einsteinerwin schrödingermany

the topic itself us understand a lot and will probably be vastly used in the future (quantum computers, understanding the big bang,

we also must not forget quantum effects like:

superposition (where 1 thing can be this and that at the same time),entanglement (where two particles are seemingly connected by some sort of unknown (or known) force, energy, matter (i know all that can be the same at least it was at the beginning)

and there is more. but probably too much for this answer to be consistent due to my average understanding of this topic.

hope this you understand quantum mechanics a little more. i'm not an expert in the topic (so don't be like wth if you are an expert) but i'm very interested in it.

anyways quantum physics is a very hard topic (harder than physics (perhaps)) therefore searching for every information there is about it and learning it is unfortunately impossible (you can only specialise into 1 - 3 things or more (perhaps

have fun and i wish you luck!

r3t40

Other questions on the subject: Physics

Physics, 22.06.2019 04:30, 2005AngelMoore

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

Answers: 2

continue

Physics, 22.06.2019 10:00, xojade

How many times did thomas edison mess up the light bulb

Answers: 1

continue

Physics, 22.06.2019 12:20, luella614ox1zum

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Answers: 2

continue

Physics, 22.06.2019 16:50, Jstylez1789

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =

Answers: 1

continue

You know the right answer?

What type of electromagnetic wave is used in security alarms...