Bissell cordless crosswave: BISSELL, 2554A CrossWave Cordless Max All in One Wet-Dry Vacuum Cleaner and Mop for Hard Floors and Area Rugs, Black/Pearl White with Electric Blue Accents –

CrossWave C6 Cordless Select – BISSELL International

CrossWave C6 Cordless Select – BISSELL International

Break free from the restrictions of cords and wires with the BISSELL® CrossWave® C6 Cordless Select Select Wet & Dry multi-surface cleaner. Ideal for regular, routine cleaning as well as those messy accidents that simply happen in an active family home. Over 25 minutes* of uninterrupted run time enables you to simultaneously vacuum, mop and dry multiple rooms and floor types. Unlike when you use a mop and bucket, our Two-Tank Technology keeps the clean and dirty water separate. Therefore, with the CrossWave® C6, you always clean your floors with fresh solution. The FreshStart™ Odour Management System means the antimicrobial brush roll and filter continously work to prevent odours and maintain freshness. The supplied Natural Multi-Surface Floor Cleaning Solution (1L) eliminates odours leaving your home smelling fresh. When you’re done cleaning your floors, the self-cleaning cycle not only cleans, with the help of the included FRESHSTART™ clean-out cycle solution (236 ml), the brush roll, but also the inside of the machine so that there is less clean-up after cleaning.

* May Very based on mode of usage

  • Cordless rechargeable cleaning: Enjoy over 25 minutes of uninterrupted runtime powered by 36V Li-Ion battery.
  • Multi-Surface Cleaning: BISSELL CrossWave C6 Cordless Select 3-in-1 vacuum cleaner is great to use on tile, sealed wood floors, laminate and area rugs. Easily and effectively vacuums and mops your floors picking up spills, dirt and removing spots.
  • Two-Tank Technology: This device features a two-tank system, designed to keep clean water and formula (0.82L) separate from dirty water (0.62L) by two independent water containers so you always clean with clean water.
  • Automatic self-cleaning: The automatic self-cleaning flushes out dirt, hair and debris from the brush roll after each use with the push of a button. Minimizes the clean-up after the clean and helps maintain performance. 
  • Odour management system: Thanks to the innovative FreshStart Odor Management System the inside of the CrossWave stays clean and helps maximize performance. The device includes an antibacterial filter and brushroll. Use it with Fresh start clean out solution for best results.
  • 1L Natural Cleaning Solution (included): Clean your floors with the Crosswave C6 Cordless Select  3-in-1 wet and dry vacuum cleaner and it’s compatible cleaning solution made on a natural base for an even better cleaning result.
  • BISSELL Original accessories: Combine the CrossWave C6 Cordless Select with BISSELL 3096, 3556 and 1789L cleaning solutions and our compatible accessories 3648, 3645, 1868F, 1934F and 2519 for the best cleaning results.
sku
3569N
Warranty period
2 years
Colour
Black, Blue, Titanium
Power (Watt)
255 watt
Width
35 cm
Height
118 cm
Depth
33 cm
Weight (Kg)
5. 58 kg
Cord length (m)
7.6 m
Water capacity (Liter)
820 l
Floor Type
Carpet and area rugs, Multi surface, Tiles, Wooden Floors, Hard Floors
  • Userguide BISSELL CrossWave C6 Cordless Select

  • Userguide BISSELL CrossWave C6 Cordless Select

CrossWave C6 Cordless Pro

Bissell Crosswave Cordless Max Multi-Surface Wet/Dry Vacuum – 9073970


667-857
BISSELL®


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  • Bissell crosswave Max multi surface

    I absolutely love this. Been looking for something to use on my hardwood and tile floor. Get the job done. I was amassed at how well it cleaned the floors.. And being cordless is a plus.


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    4 out of 4 found this review helpful


  • Love it!

    I have wanted this machine for awhile, was waiting for a sale price-thank you Bissell & HSN! Works like a charm, easy to use. The self cleaning feature is awesome.


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    5 out of 5 found this review helpful


  • Love this

    I so love this. It takes longer I think to mop the floors but I feel super confident that my floors are clean when I am done and look awesome.


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    11 out of 11 found this review helpful


  • Best product

    I just installed vinyl planks and the Crosswave is greatest product for my new floors. Plus I know that sheltered pets are taken care of.


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    11 out of 12 found this review helpful


  • Highly recommend

    I have wood look tile and was impressed on how well it cleans the floor. Highly recommend this product. The separate tanks for clean and dirty water along with self cleaning mode is a premium feature makes this product easy to use. I now favor cordless products and this product is way better than my mop and floor steam mop.


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    32 out of 34 found this review helpful


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About The Brand

BISSELL®

Acoustic Control Systems – Set of standard samples (measures) SO-2, SO-3

Designed to check and adjust the parameters and sensitivity of ultrasonic piezoelectric direct and inclined transducers of longitudinal and transverse waves used as part of ultrasonic flaw detectors.

Parameter Meaning
Length range, mm
CO-2 209.5 to 210.5
CO-3 109.8 to 109.94
Limits of permissible absolute error of length, mm
CO-2 ±0.5
CO-3 ±0.15
Permissible height range, mm
CO-2 58.83 to 58.98
CO-3 54.80 to 54.95
Limits of permissible absolute height error, mm
CO-2 ±0.15
CO-3 ±0.15
Thickness range, mm
CO-2 29.70 to 30.2
CO-3 from 29.70 to 30.2
Limits of permissible absolute thickness error, mm
CO-2 ±0. 21
CO-3 ±0.21
Hole depth #1, mm, CO-2 44.00 ± 0.12
Hole diameter #1, mm, CO-2 6.00 + 0.3
Hole depth #2, mm, CO-2 3.00 ± 0.1
Hole #2, mm, CO-2 2.00 + 0.1
Hole depth #3, mm, CO-2 8.00 ± 0.1
Hole #3, mm, CO-2 2.00 + 0.1
Permissible range of longitudinal ultrasonic wave propagation velocity, m/s
CO-2 from 5,900 to 6,000
SO-3 from 5,900 to 6,000
Permissible range of transverse ultrasonic wave propagation velocity, m/s
CO-2 from 3100 to 3400
CO-3 from 3100 to 3400
Limits of permissible absolute error of the velocity of longitudinal and transverse ultrasonic waves, % ±0. 2
Working surface roughness Ra, µm, not worse than 2.5
Material Steel 20
Size mm
CO-2 210 x 59 x 30
CO-3 110 x 55 x 30
Weight, g
CO-2 2900
CO-3 1115
Using the CO-2 sample
  • , the depth gauge with direct ultrasonic transducers of longitudinal waves is adjusted;
  • , the angle of entry of inclined ultrasonic transducers of transverse waves is measured by moving the probe along the sample and fixing its position at the moment the maximum signal from the side hole with a diameter of 6 mm is displayed on the screen of the flaw detector. The value of the entry angle is read from the mark opposite the exit point;
  • , they check the dead zone of straight and inclined ultrasonic transducers of longitudinal and transverse waves.
Using sample SO-3
  • , adjust the depth gauge with inclined ultrasonic transducers of transverse waves;
  • , the beam exit point and the arrow are determined for inclined ultrasonic transducers of transverse waves, by installing the probe over the central risk and then moving along the sample, determine the position corresponding to the maximum signal pulse reflected from the cylindrical surface of the R55 sample. The exit point is located exactly above the center line of the sample;
  • determine the ultimate sensitivity of the inclined ultrasonic transducers of transverse waves on the basis of the reference signal obtained from the cylindrical surface of the sample R55.
  • High-frequency ultrasonic flaw detector-tomograph А1525 Solo

  • High-frequency ultrasonic flaw detector-tomograph А1550 IntroVisor

  • A1211 Mini Ultrasonic Flaw Detector

  • Ultrasonic flaw detector А1212 MASTER

  • Ultrasonic flaw detector А1214 EXPERT

Electromagnetic waves – speed, length, formulas

Show how to apply the knowledge of physics in life

Start learning

125. 6K

Radio, Wi-Fi and 5G towers are all electromagnetic waves. We understand what it is and destroy the myths about this strange phenomenon.

Waves: what is it and what are they

Let’s first understand what 9 is0290 wave .

Wave is the propagation of oscillations in space.

Waves are mechanical and electromagnetic.

The main characters of this article are electromagnetic waves . We will satisfy your curiosity a little and say that these are the waves that we cannot touch. But everything else a little later. The main thing is patience.

Mechanical waves are those waves whose vibrations can be felt physically, because they are are distributed in an elastic medium .

Imagine that you are standing on a railroad track. No, you are not Anna Karenina, you are an experimenter.

If a train is approaching you, sooner or later you will hear it. Or rather, hear as soon as a sound wave with a speed of 𝑣 = 330 m/s reaches your ears.

If you put your ear to the rail, it will happen much faster, because the speed of sound in a solid is greater than in air. By the way, under water the speed of sound is greater than in air, but less than in solids.

If you’ve ever touched a music speaker, you know that sound can be felt by touch.

Waves are also usually divided into longitudinal and transverse:

Longitudinal are those waves in which oscillation occurs along the direction of wave propagation.

  • Shaking windows during thunder or seismic waves (earthquakes) is an example of longitudinal waves.

Cross – waves in which the oscillation occurs across the direction of wave propagation.

  • Imagine that you launched a wave of people in the stadium – it will be transverse.
  • Visible light and trembling of a guitar string are also transverse waves.

Sea wave – longitudinal or transverse?

In fact, it has both longitudinal and transverse components, so it cannot be attributed to a specific type.

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Electromagnetic waves

Alas, we cannot touch electromagnetic waves with our hands. It remains to figure out how this is so: there is a wave, but there is no opportunity to feel it.

Electromagnetic wave is produced by electromagnetic field .

Here is an electric field – it is created by any electric charge. There is a magnetic field – it arises due to a moving charge. And their interaction is electromagnetic field .

To be completely honest, the electric and magnetic fields cannot exist separately, because particles always have an electric field and it always somehow moves. Separate consideration of electric and magnetic fields can only be in theoretical physics. In real engineering problems, an electromagnetic field is necessarily considered.

Electromagnetic wave is the propagation of an electromagnetic field. More specifically, the electric field oscillates (the electric field strength vector changes its value and direction), the magnetic field oscillates (the magnetic induction vector changes its value and direction), these oscillations propagate, and an electromagnetic wave is obtained.

Electromagnetic waves include radio, Wi-Fi, and even light.

Doesn’t light consist of particles?

You can’t hide anything from you. The fact is that light is like Hermione with the flywheel of time in two places at once – both a particle and a wave at the same time.

You can reread the phrase above to come to terms with it. I’m not kidding. Experimentally, it has long been discovered that light in some experiments behaves like a particle, and in others like a wave.

All this madness is called corpuscular-wave dualism. And it works not only with light, but also with other waves. In general, physics also has a split personality.

Characteristics of an electromagnetic wave

To study any phenomenon, it must be characterized somehow.

Wavelength

This is the most important characteristic for a wave. She is the distance between two points of this wave, oscillating in the same phase. Simply put, this is the distance between the two “ridges”.

This value is denoted by the letter λ and is measured in meters.

Another wavelength can be called the distance traveled by the wave in one period of oscillation.

Period

Period is the time during which one oscillation occurs. That is, given the propagation time of the wave and the number of oscillations, the period can be calculated.

Wave period formula

T = t/N

T – period [s]

t – time [s]

N – number of vibrations [-]

Electromagnetic waves have a whole range of wavelengths. It shows the wavelength and frequency for different types of electromagnetic waves.

Frequency

The frequency is inversely proportional to the period. It determines how many oscillations per unit time the wave has made.

Wave frequency formula

υ = N/t = 1/T

υ – frequency [Hz]

t – time [s]

N – number of vibrations [-]

T – period [s]

Speed ​​

Another important characteristic of wave propagation is its speed .

To derive the formula for speed in terms of wavelength, you need to remember the formula for speed from kinematics – this is a branch of physics in which the movement of bodies is studied without taking into account external influences.

Speed ​​Formula

𝑣 = S/t

𝑣 — speed [m/s]

S – track [m]

t – time [s]

Turning to waves, we can draw the following analogies:

  • path – wavelength
  • time – period

And for speed, even an analogy is not needed – speed and speed in Africa.

Wave speed formula

𝑣 = λ/T

𝑣 — speed [m/s]

λ – wavelength [m]

T – period [s]

9-12 s.

Now let’s take the velocity formula

𝑣 = S/t

λ = 𝑣t/1000

Substitute the speed of light and time known to us:

λ \u003d 3 * 108 * 2 * 10-121000 \u003d 600 nm

And we correlate with the visible light scale

From the scale it can be seen that the wavelength of 600 nm corresponds to the orange color of the radiation.

Answer: the lighting color under given conditions will be orange.

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Destroying Myths

And now let’s talk a little about common misconceptions. Sit comfortably – this conversation, unfortunately, is not for a couple of minutes.

Myth 1. 5G towers are bad for our health

One of the theories against 5G is that a new type of communication can cause cancer. To be fair, 2G, 3G, 4G and earlier generations of wireless networks have received the same accusations more than once.

The 5G standard may use different frequency bands. Typically, this is the low band of 600 MHz, as well as the middle frequencies of 2.5 GHz, 3.5 GHz and 3.7-4.2 GHz.

In Russia, the State Commission on Radio Frequencies (SCRF) recommends the frequency range 27.1-27.5 GHz for allocation and use under 5G. The 37 GHz, 39 GHz and 47 GHz bands will also be available to US carriers soon.

The 30 GHz (millimeter wave) band is part of the so-called extremely high frequency spectrum and is the one that causes most concerns about the harm to human health 5G. There is still not enough research that studies the effects of high frequencies on the body.

Source: The Islands’ Sounder

However, it is known that even in the upper band, 5G radiation does not have enough energy to destroy human DNA or affect cells. This means that it cannot cause cancer and does not pose a danger to our body. For the same reason, you can’t believe in the theory that 5G kills birds – this radiation is simply not strong enough to kill someone.

Hazardous radiation includes waves propagating at frequencies from 30 PHz (petahertz) – ultraviolet, x-rays and gamma rays. They can affect the atomic structure of cells and break chemical bonds in DNA. That is why, for example, doctors advise avoiding long exposure to the sun.

Myth 2. Foil caps protect against harmful radiation

By the way, on the contrary, they amplify any electromagnetic wave. This has been proven by students at MIT (Massachusetts Institute of Technology) who have researched it empirically.

The guys installed the antenna in four parts from the volunteers’ head: on the forehead, back of the head, temples and in the brain area. And they compared the performance of the radio signal in the cap for the foil and without it. It turned out that the signal is not weakened, but amplified. So the cap will not save you from harmful radiation, but on the contrary, it will only strengthen the signal.

Myth 3. Microwaves kill food, and it becomes inanimate

The electromagnetic background near microwave ovens is more than a million times higher than natural, but does not harm a person. Sanitary requirements for these devices are very strict, so the microwave does not pose a danger. For example, thanks to the door interlock system, the generation of microwave radiation stops when the door is opened. Also in the microwave must be a system of protection against leakage of radiation. Much more dangerous are electromagnetic radiation from the sun or a solarium, because there is ultraviolet light that easily damages human skin cells.

Foods become warmer by heating the water in them. And when we heat them, radicals can form – but this happens with any method of thermal exposure.