What is claimed is:
1. A display apparatus comprising:
picture displaying means for providing a viewer with a picture; and
heat generating means for providing the viewer with heat.
2. A display apparatus as claimed in claim 1, wherein said heat generating means provides the viewer with a heat in accordance with the picture.
3. A display apparatus as claimed in claim 2, wherein said heat generating means provides the viewer with a heat in accordance with a brightness of the picture.
4. A display apparatus as claimed in claim 1, wherein said heat generating means changes, in accordance with the picture, a portion where the viewer is provided with heat.
5. A display apparatus as claimed in claim 1, wherein the picture that said picture displaying means provides the viewer with is a virtual picture.
6. A display apparatus as claimed in claim 5, further comprising:
a sensor for detecting a pressure;
means for detecting with said sensor that the viewer grabs an object within the virtual picture; and
means for providing the viewer with a heat in accordance with the object grabbed by the viewer.
7. A display apparatus comprising:
picture displaying means for providing a viewer with a picture;
sound outputting means for providing the viewer with sound; and
heat generating means for providing the viewer with heat.
8. A display apparatus as claimed in claim 7, wherein the picture that said picture displaying means provides the viewer with is a virtual picture.
9. A display apparatus as claimed in claim 7, wherein said heat generating means provides a heat in accordance with the picture.
10. A display apparatus as claimed in claim 9, wherein said heat generating means provides the viewer with a heat in accordance with a brightness of the picture.
11. A display apparatus as claimed in claim 7, wherein said heat generating means provides a heat in accordance with the sound.
12. A display apparatus comprising:
means for outputting a video signal;
means for displaying a picture based on the video signal; and
means for generating heat based on the video signal.
13. A display apparatus as claimed in claim 12, the picture that said picture displaying means provides the viewer with is a virtual picture.
14. A method of providing heat, comprising the steps of:
displaying an image; and
providing a viewer with a heat in accordance with the displayed image.
15. A method as claimed in claim 14, wherein said image is a virtual image.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A peroxidic fluoropolyether with an average molecular weight of 300-5000, the acid value of 20-120 mg NaOHg, the peroxide value of 0.5 wt %\u02dc10.0 wt %, and having the following formula:
A-O-(Gf-O)m(Gf-O\u2014O)n\u2014(CF2O)p\u2014(CF2OO)q\u2014(CF(CF3)O)r\u2014B\u2003\u2003(I)
wherein:
Gf is \u2014CF2CF(CF3)\u2014 or \u2014CF(CF3)CF2\u2014;
terminal group A is \u2014CF3, \u2014COOM or \u2014CF2COOM;
group B is \u2014COOM or \u2014CF2COOM; wherein, M is \u2014H, \u2014NH4 or alkali metal elements;
m, n, p, q and r meet the following conditions:
(1) m, n, p, q, r are integers not less than zero;
(2) n+q\u22671;
(3) n+q\u2266m+p+r;
(4) m\u2267n+p+q+r; and
(5) meeting the requirements of molecular weight range.
2. A dispersion obtained from polymerization of a fluorine-containing monomer, wherein, the peroxidic fluoropolyether of claim 1 is surfactant.
3. The dispersion as claimed in claim 2, wherein, the solid content of the dispersion is no less than 15 wt %, and the average diameter of the particles in the dispersion is not greater than 300 nm.
4. The dispersion as claimed in claim 2, wherein, the concentration of the surfactant is no more than 10 wt %, based on the weight of water in the dispersion.
5. The dispersion as claimed in claim 4, wherein, the amount of the surfactant added to the reaction is 0.05 wt %\u02dc4 wt %, based on the weight of water in the dispersion.
6. The dispersion as claimed in claim 4, wherein, the amount of the surfactant added to the reaction is 0.05 wt %\u02dc0.4 wt %, based on the weight of water in the dispersion.
7. The dispersion as claimed in claim 4, wherein, the fluorine-containing monomer is selected from the group consisting of perfluoro-olefins, fluorine-containing olefin ethers, fluorine-containing heterocyclic double bond substances of perfluoro-2,2-dimethyl-1,3-dioxole, fluorine-free olefins copolymerized with fluorine-containing olefins of ethylene and propylene, and mixtures thereof.
8. The dispersion as claimed in claim 4, wherein the fluorine-containing monomer is selected from the group consisting of tetrafluoro-ethylene, hexafluoro-propylene, vinylidene fluoride, chloro-trifluoro-ethylene\u25a1, perfluoro-methyl-vinyl ether, and mixtures thereof.