Radiometer Round Big

RADIOMETER ROUND BIG

A radiometer or roentgen meter is a device for measuring the radiant flux (power) of electromagnetic radiation. Generally, a radiometer is an infrared radiation detector or ultraviolet detector. The name Radiometer is frequently used to refer to a Crookes radiometer (“light-mill”), an early model device wherein a rotor (having vanes which are dark on one side, and light on the other) in a partial vacuum spins when exposed to light. A common myth (one originally held even by Crookes) is that the momentum of the absorbed light on the black faces makes the radiometer operate. If this were true however, the radiometer would spin away from the non-black faces, since the photons bouncing off those faces impart more momentum than the photons absorbed on the black faces. Photons do exert radiation pressure on the faces, but those forces are dwarfed by other effects. The final explanation depends on having just the right degree of vacuum, and is more related to the transfer of heat than the direct effect of photons.

SPECIFICATIONS

Dimensions: 11 x 11 x 23 cm (L x W x H)

Materials: Glass

Colour: Transparent

PACKAGE CONTENTS

1 x Radiometer Round Big

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Please note for change of mind or wrong product purchased returns, a 20% restocking fee will apply.

For change of mind returns, you will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $50, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

Also, please feel free to contact us before or when you get your item so we can respond to anything you might need about it. We're always here to help.

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.

To complete your return, please contact us via your account.

Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted: (if applicable)

Book with obvious signs of use
CD, DVD, VHS tape, software, video game, cassette tape, or vinyl record that has been opened.
Any item not in its original condition, is damaged or missing parts for reasons not due to our error.

The following items are non-returnable and non-refundable:

Toilet paper, paper towel, tissues and serviettes

Medicinal (pain relief)

Cleaning (Examples: anti-bacterial wipes, sprays and cleaners, disposable gloves)

Feminine hygiene and incontinence

Baby wipes

Hand sanitisers

Disposable and reusable face masks

Cosmetics & beauty products (if hygiene seal is broken)

Pharmaceutical/health products

Perishable goods, liquor, food and beverages

Personal care items

Hosiery, underwear & socks

Swimwear

Pierced jewellery

Mattresses, pillows, mattress and pillow protectors

Gift cards, phone recharge or third party gift cards

Media - books and unsealed CDs, DVDs & video games

Adult toys/sexual health products

Assembled furniture

Digital goods (download codes etc.)

Personalised/made to order goods

Earphones/headphones (if package has been opened)

Large/bulky appliances

Any merchandise where the GST has been claimed under the Tourist Refund Scheme, unless proof of repayment of the GST upon return to Australia is provided

Once your return is received and inspected, we will notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed.

Radiometer Round Big

Radiometer Round Big

Shipping Details